Addo-X 9910
Early printing electronic calculator made by A.B. Addo of Malmo, Sweden. 18 digit capacity (with four additional guard digits), 10-key keyboard.

Addo-X 9357
14-digit capacity, fixed decimal at 0, 2, 4 and 6 digits behind the decimal point. Constant for multipliation and division.

Addo-X 9958
Early hybrid calculator mixing a few small-scale IC's, amongst a majority of discrete transistor and diode-resistor logic. OEM'd by Addo-X from Sharp Corporation. 16 digit capacity with Nixie tube display, two memory accumulators. Fixed decial at 0, 2, 3, 4, or 8 digits behind decimal point. Very similar in function to the Burroughs C-3350 exhibited in this museum.

Anita 1011
Third Generation Sumlock/Anita Nixie tube calculator. Ten digit, four function with percent and memory. Mostly discrete transistor circuitry with a few IC's.

Anita 1011 LSI
3rd Generation Sumlock/Anita Nixie tube calculator. Ten digit, four function with percent and memory. Essentially a re-implementation of Anita 1011 (see above) using early Large Scale IC's.

Busicom 141
Follow-on machine to Nippon Calculating Machine Co.'s first electronic calculator, the Busicom 161. The 141 was a cost-reduced version of the 161. 14-digit capacity, Nixie display four-function calculator with single memory register. Discrete diode/transistor logic. Thumbwheel- selectable fixed decimal point location.

Busicom 162C
16-digit capacity, Nixie tube display, automatic square root, two accumulating memory registers. Utilizes small-scale DTL IC logic, with a small core memory array for working register storage. Marketed in the US by NCR as the NCR 18-3.

Busicom 202
A programmable desktop calculator sold by Nippon Computing Machine Co. (NCM), but designed under contract by Wyle Laboratories. Uses built-in punched card reader for program entry. 20 digit capacity, with CRT display. Two memory registers. Utilizes early small-scale DTL integrated circuit technology, and magnetostrictive delay line for register storage.

Busicom 207/207P
A programmable desktop calculator marketed by Busicom, but designed by Wyle Laboratories. Follow-on to the NCM/Busicom 202. Uses built-in punched card reader for program entry. 20 digit capacity, with CRT display. Seven memory registers. Utilizes early small-scale integrated circuit technology. The Model 207P provided a connection for an external printer.

Busicom 2017/2017P
Busicom's advanced programmable desktop calculator. Also designed by Wyle Laboratories for exclusive marketing by Busicom. Uses built-in punched card reader for programming. 20 digit capacity, with CRT display. 17 memory registers. Utilizes early small-scale DTL integrated circuit technology. Also available as the Model 2017P, with an external high-speed printer.

Burroughs C3120
Burroughs 12-digit Nixie display Desktop Calculator, circa late 1960's. One accumulator-style memory register. Four function only.

Burroughs C3316
Burroughs 16-digit Nixie display Desktop Calculator, Circa 1968-1970. Two accumulator-style memory registers. Four function with square root.

Burroughs C3661 Desktop Programmable
Burroughs 16-digit Nixie display Desktop Programmable Calculator, Circa 1971-1973. Follow-on to the Burroughs C-3660 calculator, with additional of steps of program memory, and more comprehensive test/branch capabilities. Mag-Card reader for program storage. Early Large-Scale integrated circuit calculating engine. Wanted in any condition, working or not.

Burroughs C7400
Burroughs Programmable Desktop Printing calculator, circa 1977-1979. Higher-level programming functions. Four function math, with arbitrary root and power functions. Algebraic logic.

Canon 130
First Canon electronic calculator product, introduced in late 1964. All transistor circuitry. Four function, 13 digit capacity. Display uses unique electro-optical technology designed by Canon. See exhibit of Canon 161 for more information.

Canon 163
Canon Nixie-display desktop electronic calculator from the late 1960's. 16 digit with memory functions, square root. The Monroe 990 may be the Monroe-sold version of this calculator.

Canon 167
An interesting calculator designed using a small magnetic drum as the storage element for the working registers of the calculator. 16 digit capacity with four functions and square root. Utilizes Canon's unique electro-optical display technology, same as used in the Canon 161. Seven memory registers (five store/recall, two accumulating registers).

Canon 1614P
Canon Punched-Card Programmable, 16-digit Nixie Display. Appears to be virtually identical to Canon 167P, with more memory registers (14), and possibly larger program storage space.

Canon Canola SX-320 Programmable
Complex programmable calculator, from the 1977 timeframe. LED display, 16-digit mantissa, 2-digit exponent, with signs. Mostly LSI IC technology, with a lot of small-scale glue logic. Built-in thermal alphanumeric dot-matrix printer, and magnetic tape cassette drive. Fixed or floating decimal. Large compliment of scientific functions built-in.

Casio 001 Desktop Calculator
Casio's first solid-state electronic calculator. Nixie tubr display, four-function, AC-powered desktop calculator. Constant set by front-mounted rotary switches.

Casio 101 Desktop Calculator
Follow-on to Casio's first solid-state desktop calculator, the 001 (see above) from Casio. Ten-Digit Nixie display, four-function, AC-powered desktop calculator. Single memory register that can automatically accumulate sum of products or quotients. Seven-digit constant set by front-mounted rotary switches.

Casio 101P Desktop Calculator
Printing version of the Casio 101 calculator. Four-function, AC-powered printing desktop calculator. Single memory register can automatically accumulate sum of products or quotients. Seven-digit constant set by rotary switches. 20 character-per-second printer records results on adding machine tape. Casio's first printing electronic calculator.

Casio 120 Desktop Calculator
Casio Desktop Nixie-Tube Calculator. 12-Digit, four-function AC-powered desktop calculator.

Casio 121-B or AS-B Desktop Calculator
Casio Desktop Nixie-Tube Calculator. Identical machines with two different model numbers...photo shows 121-B, but AS-B is identical with exception of model number. Looking for either or both machines. 12-Digit, four-function with accumulating memory register. AC-Powered. Sold by Sperry Remington in the U.S. as the EDC-1201GT "Lektronic".

Casio 121-K Desktop Calculator
Casio Desktop Nixie-Tube display Calculator. 12-Digit, four-function with constant and accumulating total register. Circa late 1970, uses early Fairchild 4-chip LSI calculator chipset. AC-Powered.

Casio 122 Desktop Calculator
Casio Desktop calculator. Nixie-Tube Display. 12-Digit, four-function AC-powered desktop calculator.

Casio 152 Desktop Calculator
Second-generation Casio Desktop calculator. 15-digit Nixie-Tube Display. Four-function with two memory registers. Fixed and floating decimal point modes.

Casio AL-1000 Desktop Calculator
First-generation, transistorized electronic calculator from Casio. Casio's first programmable calculator. Identical machine marketed by Commodore as the Commodore AL-1000. Wanted dead or alive.

Casio AL-1000S Desktop Calculator
Updated version of the AL-1000 (see above) that provides input/output capabilities via an external typewriter).

Casio AS-C Desktop Calculator
Casio Desktop 12-digit Nixie-Tube Calculator from early 1970's. Early 4-chip LSI chipset made by Fairchild. Electronically simiar to the Casio 121K. May also have been marketed as Casio 121-C, but as yet this has not been positively verified.

Casio FX-3 Scientific Desktop
Early casio desktop scientific, follow-on to the Casio FX-1. 12-digit Vacuum-Fluorescent display.

Cintra/Tektronix "Statistician" Model 911 Desktop Calculator
10 digit (plus 2 digit exponent) Nixie display, statistical functions calculator. Probably introduced in late '69 to early '70. Originally made by Cintra, but later rebadged by Tektronix, when Tek purchased Cintra in May of 1971. Physical appearance virtually identical to the Cintra/Tektronix 909 with only difference being keyboard nomenclature.

Commodore 412
Commodore 12-digit desktop electronic calculator. 7-segment display. Selectable fixed decimal point location.

Commodore 612
Commodore 12-digit desktop electronic calculator. Nixie tube display. Accumulating memory register for sum of products/quotients. Automatic constant for multiply/divide. Hybrid fixed/floating decimal, with location set by position of decimal in first number. Small and Early Medium-Scale MOS Integrated Circuitry.

Commodore US*3
Commodore 8-digit desktop electronic calculator. Vacuum-fluorescent display, with individual tubes. Four function with memory register and constant. Floating decimal.

Compucorp 110 Scientist
Compucorp AC-Powered Desktop Scientific Calculator. Shared styling with other first generation Compucorp calculators. Nixie tube display, scientific notation capable.

Compucorp 155 Surveyor
Compucorp AC-Powered programmable printing desktop calculator specifically designed for surveying applications. First-generation HTL Large Scale chipset shared with other 100-series calculators. Drum impact printer. Optional card reader for loading programs from punched cards.

Compucorp 327 "Scientific"
Compucorp AC-Powered Desktop Programmable scientific calculator. 12-digit display with impact (drum) printer. 416-step learn-mode programming. Add-on external cassette tape drive allows storage of programs and data on cassette tape. Two-color (black/red) printing capability. Six-level subroutine nesting. I/O expansion capabilities allow connection of peripheral devices including ASR-33 Teletype units.

Compucorp 360 Bond Trader
"Portable" Compucorp Bond Trading (Financial) Calculator. Panaplex display, can operate on battery (rechargeable NiCd) or external charger. Learn-mode programmable.

Data Acquisition Corp. DAC-512
An early advanced programmable desktop calculator made by Data Acquisition Corp., of Hamden Connecticut. Machine was introduced in mid-1965, and was arguably the most powerful desktop electronic calculator available at the time, and for some time thereafter. Four-function, arithmetic logic with parentheses. Nixie display. Keyboard/display unit with cable to remote electronics package. Transistor and magnetic core memory technology. Wanted dead or alive. Also looking for documentation, marketing literature, or user anecdotes.

Deitzgen 7400P
Eugene Deitzgen Co. OEM version of Computer Design Corporation's Desktop Nixie-Tube display scientific programmable calculator. Calculator provides Trigonometric Functions, Factorial, Square Root, Logarithms, Exponential functions. 128-Step Program Memory.

Denon DEC-411
2nd Generation Denon Desktop Electronic Calculator. 12-digit Nixie display, four function, fixed decimal, with constant function.

Denon DEC-521
Early Denon Desktop Calculator. 12-digit Nixie display.

Denon DEC-621
Early Denon Desktop Calculator. 14-digit Nixie display.

Dero Sage 1
One and only calculator made by Dero Research & Development Corp., a company that built military radio equipment. The machine has a ten-digit 7-segment display (of unknown technology, probably incandescent lamps). a capacity of 20 digits, with apparently no ability to handle decimal points, and appears to provide the standard four math functions, along with some kind of storage register capability. It appears to have come onto the market in the late 1966 to early 1967 timeframe. If you have one of these machines, or have information about it, please contact the curator by clicking the EMail link above.

Diehl Combitron
First electronic calculator by German firm Diehl, introduced in 1966. Print-only calculator. Acoustic delay line register storage. Metal punched tape loads at power-on with "operating instructions" (microcode).

Facit 1121
Very similar to Sharp Compet 20. Nixie display, 16 digit, (versus 14 for Compet 20) all transistor (no IC's). Circa 1966.

Facit 1122
Similar to Sharp Compet 20. Nixie display, 14 digit, with memory. All transistor. Fixed or floating decimal. Circa 1966.

Facit 1123
14-digit Nixie desktop calculator, 4 function, fixed decimal. Small-scale IC logic.

Facit 1125
16-digit Nixie desktop calculator, 4 function, fixed decimal with 2 accumulating memory registers. Small-scale IC logic.

Friden 5005 Computyper
Late '60's-vintage business "billing" machine integrating functions of a programmable calculator into a 2nd generation Friden Flexowriter. Any information, documentation, stories/recollections, and, of course, if you have one, the museum wants it, working or not.

Singer/Friden EC1150
Friden's first electronic printing calculator. Base model in series, similar to to Friden 1152 calculator. Small-scale integrated circuit technology.

Singer/Friden EC1151
A programmable version of the 1150 (see above), providing learn-mode programming capability of 30 steps. Small-scale integrated circuit technology.

Friden SRW or SRQ
Friden Electro-mechanical, Automatic Square Root(SRW), Automatic Square Root and Square (SRQ).

Friden SVE
Friden Electro-mechanical, early 1960's. Shortcut multiply, automatic decimal point placement.

General Teknika 1600
Manufactured by The General Corporation of Japan, the Teknika 1600 is a large desktop electronic calculator from the early 1970's. The machine provides sixteen digits of capacity, with fixed decimal point settings ranging from zero to nine digits behind the decimal. The machine uses gas-discharge seven-segment display tubes. The circuitry is implemented with Mitsubishi small-scale DTL/TTL integrated circuits, and a small core memory array for working register storage.

Hitachi KK-461
Hitachi's original of Singer/Friden's EC-1118. Singer/Friden purchased these machines under OEM agreement (making some cabinetry an color changes) with Hitachi and marketed it under their brand name in the Americas. Nixie tube display. 14-digit capacity. Four function with two memory registers. Marketed by Hitachi in Japan and Europe.

Hitachi KK-471
Hitachi's original of Singer/Friden's EC-1117. Singer/Friden purchased these machines under OEM agreement with Hitachi and marketed it under their brand name in the Americas. Nixie tube display. 12-digit capacity. Four function with one memory register. Marketed by Hitachi in Asia and Europe.

IME 26
Follow-on, lower-cost version of the original IME 84 and IME 86 calculators. All transistor circuitry of same architecture as the earlier machines. 12 digit capacity with fixed decimal. Nixie tube display, four function with single accumulating memory register.

IME 84
First electronic calculator by Italian calculator company Industria Macchine Elettroniche (IME). One of the earliest all-transistor calculators. Uses core memory for register storage. 16-digit capacity with Nixie tube display. Four function. Introduced in 1964.

Logicon "Computer"
Programmable desktop electronic calculator designed for in-house engineering use by Logicon, Inc. of Redondo Beach, California. CRT Display. Learn-mode programming. Core memory for register and program storage. First prototype operational early to mid-1965. Machine never became a product -- it was designed and manufactured (somewhere between two and six were apparently made) strictly as a tool to help with engineering calculations within Logicon.

MITS 816
MITS four-function, 8 digit desktop calculator. First calculator offered by MITS, euther as a kit, or a fully assembled unit. First announced in November, 1971 Popular Electronics magazine as a construction article.

MITS 1440
MITS general-purpose desktop calculator. 14 digit LED display. Square root, percent, and memory functions. Circa 1973.

MITS 7440 Programmer
Before the Altair, widely recognized as the first practical "personal computer", MITS (among other things, such as an infrared communicator and various telemetry systems for model rockets) marketed electronic calculators that were avialable in assembled or kit form. The museum is looking for the "7440 Programmer", an add-on device that when connected to the 7440 calculator, would allow 128 or 256 (depending on memory option) step programs that included looping and branching capabilities.

Monroe EPIC 2000 Programmable Calculator
Printing only, all transistor "Learn Mode" programmable calculator. Two part design, printer/keyboard unit connects to suitcase-sized electronics package. Specifically looking for keyboard/printer unit, but any and all parts wanted.

Monroe EPIC 3000 Programmable Calculator
Printing only, all transistor "Learn Mode" programmable calculator from Monroe, circa 1967. Follow on to earlier EPIC 2000 calculator (see above). Two part design, printer/keyboard unit connects to suitcase-sized electronics package where all the brains are. Four function with square root. Any and all parts wanted.

Monroe 820A
14 pound desktop CRT display four-function office calculator. Fixed and floating decimal settings. Two row, 14-digit CRT display, with seven-segment digit rendition. Circa 1970.

Monroe 1610 Scientific
Desktop Nixie-tube display scientific calculator, circa 1971-1972. Made by Computer Design Corp. for Monroe.

Monroe 1655 Scientific Programmable
Made by Compucorp for Litton/Monroe. Nixie display, 10 digit plus sign mantissa, 2 digit plus sign exponent.

Monroe 1710 Statistical Calculator
Desktop Nixie-tube display scientific calculator, circa 1971-1972. Made by Computer Design Corp. for Monroe, similar (if not identical) to model 110 Scientist from Computer Design Corp.

Monroe 1765 Surveyor
Desktop Printing-only Programmable Calculator, with specialized functions for surveying applications. 256-step program storage. Can connect to external punched card reader for loading programs. Circa 1971.

NCR 18-1
Manufactured by NCM/Busicom(Japan) and sold by NCR through an OEM license with NCM. 14-digit Panaplex-style gas-discharge display. Utilizes small-scale integrated circuit technology, and small magnetic core memory for register storage. Four function, with single accumulating memory register. Fixed decimal. Introduced slightly later than NCR's first machines marketed through their OEM relationship with NCM/Busicom, the NCR 18-2, and the NCR 18-3.

NCR 18-3
Manufactured for NCR for sale in USA by NCM/Busicom(Japan), who marketed the identical machine as the Busicom 162C. 16-Digit Nixie display calculator, utilizing small-scale integrated circuit technology, and small magnetic core memory for register storage. Four function with one key automatic square root. See exhibit on the NCR 18-2 for information on the 18-3's little brother, same calculator without square root function.

NCR 18-15
Manufactured for NCR for sale in USA by NCM/Busicom(Japan). Medium-Scale integrated circuit logic implementation. 12-digit Vacuum-Fluorescent display, four function, fixed decimal.

NCR 18-16
Manufactured for NCR for sale in USA by NCM/Busicom(Japan). Uses first single-chip calculator IC made by Mostek. 12-digit Vacuum-Fluorescent display, four function, fixed decimal.

Oi Electric Aleph-Zero
Early desktop electronic calculator utilizing Parametron ferromagnetic devices as logic elements. Only calculator made by Oi Electric in Japan.

Olivetti P-602
Circa 1971. Follow-on to Olivetti Programma 101. Mag-card reader/writer for offline program storage. Built-in drum printer for output.

Olympia RAE 4/15
Olympia's first electronic calculator. All-transistor construction with magnetic core memory, Nixie tube display. Four function with multiple memory registers. 15-digit capacity.

Olympia RAE 4/30-2
First generation Olympia electronic calculator. Mid-range machine the RAE 4/30 series, with two memory registers. Magnetic core memory, Nixie tube display, all-transistor construction.

Olympia RAE 4/30-3
First generation Olympia electronic calculator. High end of the RAE 4/30 series, with three memory registers. Functionally identical to the Monroe 770, which was a cosmetically modified version of the RAE 4/30-3 (keyboard color changes, badging, power switch location, and overflow/sign indicator indication) marketed in North America by Monroe.

Olympia ICR-412
12-digit Nixie display (with 'double precision' 24-digit capacity) four function desktop calculator with single memory register. Circa 1970.

Omron 800
8-digit Vacuum Fluorescent display, four function calculator using early Hitachi-designed 4-chip LSI calculator chipset from the 1971 timeframe. Functionally identical to the Miida MC-840 and Adler 804 calculators, which were OEM 'clones' of the Omron 800.

Philips P 249/P 250/P 251/P 252
Printing desktop electronic calculators from Philips, circa 1969. Early small-scale DTL integrated circuit design, utilizing magnetic core memory as working storage. 70 character-per-second serial 7-pin dot-matrix printing mechanism, an apparent first of its kind in electronic calculator use. No display. 14-digit capacity. Model P 249 and P 250 have no memory capability, while the P 251 and P 252 have one and two memory registers respectively. All models feature a percentage calculation. Model P 252 includes one-key automatic square root. All models have fixed decimal with trailing zero suppression and automatic rounding. Approximate dimensions of 19" deep, 13 3/4" wide, 8 1/4" high and weight of 33 pounds.

Ricoh Ricomac 1200D
Basic early '70's four function, 12-digit desktop calculator. Manufactured by Unicom (a division of chip manufacturer AMI), and sold through OEM customers including Ricoh and Commodore, as well as under the Unicom brand name. Unicom's first calculator product.

Ricoh Ricomac 1200
An updated version of the Ricomac 1200D using newer AMI LSI technology to shrink the size of the machine, by reducing the chip count. Manufactured by Unicom division of AMI, and sold through OEM customers including Ricoh and Commodore, as well as under the Unicom brand name.

Sanyo ICC-162
Late 1960's small-scale MOS Integrated Circuit-based desktop electronic calculator. Modular seven-segment incandescent display. 16-digit capacity, sliding fixed decimal selector 0-15 digits behind decimal, four function with single-key square root. Two accumulating memory registers.

Any Rockwell 900-Series Programmable Calculator
Mid-1970's vintage programmable electronic calculators from Rockwell. Models include 920, 930, 940, and 960. Display and printer. Magnetic card reader for program/data storage. 14-digit capacity with scientific notation.

SCM/Marchant Cogito 566PR
1968 vintage programmable printing electronic calculator. Four function with automatic square root. 16-digit capacity, eight memory registers. 66 step learn-mode programmability.

SCM/Marchant Model 410
Low-end model of SCM/Marchant 400-series desktop electronic calculator. Nixie tube display, 10 digits. Unique 'dimmed' leading/trailing zeroes. Floating point (as opposed to settable fixed point on Cogito 412(12-digit) and Cogito 414(14-digit) models. Does not provide division function! Note that this model is designated "Marchant 410" as opposed to the "Cogito" designation on the 412 and 414 machines.

Seiko S-301
Circa 1969. Utilizes Seiko's famous compact impact drum printer. Integrated circuit DTL (Diode-Transistor Logic) circuitry. Learn-mode programmable. Four function with square root. Five store/recall memory registers. Fixed decimal. Magnetic card reader for program/data storage. Magnetostrictive delay line for working register and program storage.

Sharp Compet 10 (Model CS-10A)
Sharp's First All-Transistor Electronic Calculator. "Full Size" keyboard, similar to older style electromechanical calculator. Nixie tube display.

Sharp Compet 12
Similar in function to the Sharp Compet 17 (see below), but uses vacuum-fluorescent display technology in the form of Itron tubes, instead of Nixie tubes. 12-digit, four function, fixed decimal machine utilizing small-scale MOS integrated circuitry. See the exhibit on the Sharp QT-8D for an example of Itron vacuum-fluorescent display technology. Introduced in 1969.

Sharp Compet 17
A lower-cost version of the Sharp Compet 16 omitting the memory functionality. The machine utilizes identical circuitry to the Compet 16, just omits the keys on the keyboard for the memory functionality. Priced $100 less than the Compet 16.

Sharp Compet 18
MOS-IC-based desktop calculator utilizing unusual Itron Vacuum-Flourescent display tubes. Same design as the Sharp Compet 12 listed above, but adds a memory register. Identical in function to the Sharp Compet 16 with only difference being the Itron vacuum-fluorescent display.

Sharp Compet 20
All-transistor electronic desktop. 14 plus sign Nixie display. See Facit 1121.
WANTED DEAD OR ALIVE

Sharp Compet 21
Follow-on version to the Sharp Compet 20, adding automatic square root. 14-digit Nixie display.

Sharp Compet 23
Reduced cost version of the Sharp Compet 22, removing accessory connection capability. Four function, one accumulator-style memory register, 14-digit Nixie display.

Sharp Compet 30
Similar in appearance and architecture to the Sharp Compet 20, but utilizing fixed decimal point logic, adding a memory register for ease in processing multi-step calculations. Two versions were manufactured, the CS-30A, and CS-30B. The difference between the versions is unknown, but likely related to design changes to reduce cost.

Sharp Compet 31
16-digit Nixie display, with single memory register. Sharp's first calculator to utilize early small-scale bipolar integrated circuit logic. A small number of IC's, combined with discrete diode/transistor logic and magnetic core memory make up the brains of this machine. Very similar in appearance to its follow-on machine, the Sharp Compet 32.

Sharp Compet 32
Follow-on machine to the Sharp Compet 31 adding an additional memory register and automatic square root operation. Limited number of small-scale bipolar integrated circuit logic combined with a large amount of discrete diode/transistor logic. Magnetic core memory array for register storage.

Sharp Compet 261
16-Digit Nixie display desktop.

Sharp Compet 361 / 361R
Sharp Desktop electronic calculator, introduced in early '69. 16-digit Nixie tube display. Small-scale MOS IC design, with small magnetic core memory array for working register storage. Four function (model 361R adds two-key square root function), fixed decimal, with two accumulating memory registers.

Sharp Compet 364P
Sharp Desktop Programmable. 16-digit Nixie tube display, magnetic card reader for program load/store. Appears to pre-date the 363P, using earlier technology. Optional 'snap-on' printer module adds printing capability.

Sharp Compet 662
Printing desktop calculator utilizing "ticker-tape" style serial printer, circa 1969.

Sony ICC-100
Sony Desktop Electronic Calculator. 16 digit, 1 memory. tube display.

Sony ICC-200
Sony Desktop Electronic Calculator. 16 digit, 2 memories, square root.

Sony ICC-550W
First-generation Sony Desktop Calculator. Upgraded version of Sony ICC-500W, adding 'comma' digit grouping, memory subtotal, and constant functions. Hybridized transistor circuitry. 14 digit capacity, Nixie tube display with lead-zero suppression.

Sony ICC-600W
First-generation Sony Desktop Calculator. Upgraded version of Sony ICC-550W, adding square root function. Hybridized transistor circuitry. 14 digit capacity, Nixie tube display.

Sony ICC-2700W
Sony's top-of-the-line programmable calculator, and also last of Sony's line of electronic calculators before they left the calculator business. Very similar to Sony ICC-2550W in the museum, except adds additional memory registers (12) and larger program storage space (253 steps).

Sperry Remington EDC-I / EDC-ID
Sperry-Remington Nixie desktop, late 1960's. 13 digit with fixed decimal. Small-scale IC circuitry, with IC's made by Philco. EDC-1D offers thumbwheel-selectable decimal point, while EDC-1 provides no obvious means for setting decimal point selection.

Sperry Remington EDC-III/EDC-IIIA
Sperry-Remington Nixie-display desktop. Follow-on to the EDC-I (See above). Fixed decimal. Small-scale IC circuitry, with magnetostrictive delay line for register storage. Two accumuating memory registers. Introduced in Fall, 1968. EDC-IIIA offered slightly later, but no information on the differences between the EDC-III and EDC-IIIA available at this time.

Tektronix Model 21
Tektronix entry-level programmable. Circa 1972. Panaplex-style 7-segment display. Thermal printer. Mag-card program storage.

Texas Instruments SR-60 (or SR-60A) Programmable Scientific
TI Desktop, 5x7 Dot Matrix LED Display, Mag Card Reader, Thermal Printer. Existing machine in museum has developed problems. Parts machines or fully working units wanted.

Toshiba TOSCAL BC-1211
12-digit, four-function desktop electronic calculator. Identical in style to the Toshiba BC-1211S.

Toshiba TOSCAL BC-1213
Second-generation Nixie Tube display desktop electronic calculator. 12-digits.

Toshiba TOSCAL BC-1412
Early (late 1960's) Toshiba Nixie Tube electronic calculator. 14-digit, five function (percent function) calculator with memory. Fixed decimal, thumbwheel selectable to 0, 2, 4, 6, or 8 digits behind the decimal point. All-transistor circuitry.

Toshiba TOSCAL BC-1414
Early (late 1960's) Toshiba Fluorescent display electronic calculator. 14-digit display w/memory. Fixed decimal w/ rotary-switch selectable decimal point location. Early Toshiba Small-Scale MOS integrated circuit design, circa 1970.

Toshiba TOSCAL BC-1421
Early (late 1960's) Fluorescent display desktop electronic calculator. 14-digit display two memory registers. Fixed decimal w/ rotary-switch selectable decimal point location. Early Toshiba Small-Scale MOS integrated circuit design.

Toshiba BC-1621
Late 1960's Nixie-display electronic calculator. 16-digit display, thumbwheel-selectable fixed decimal, two memory registers. Square root and percent functions.

Toshiba BC-1623
Late 1960's Nixie-display electronic calculator. 16-digit display, four-function with automatic square root and percent calculations. Small-scale integrated circuit logic. Electro-mechanical item counter.

Toshiba BC-1623G
Follow-on to the BC-1623 adding 30 steps of learn-mode programmability and an additional memory register.

Toshiba BC-1624
Late 1960's Nixie-display electronic calculator. Four function with percent. 16-digit display. Two accumulator-style memory registers. Small-scale integrated circuit logic. Electro-mechanical item counter.

Toshiba BC-1625
Late 1960's Nixie-display electronic calculator. 16-digit display, extended memory capabilities. At the high-end of Toshiba's 2nd generation of desktop electronic calculators.

Uchida Yoko USAC 10B
Product of large Japanese manufacturing conglomerate, Uchida Yoko Co., Ltd. Claims to be the world's first all integrated circuit desktop electronic calculator, though this is a claim that is unlikely to be true. Introduced sometime in mid to late '67. Ten digit, four function machine with single accumulating memory register. Nixie tube display. Interested in the machine itself, as well as any other information about the company and its electronic calculators.

Victor 1400-series Calculator
Early Victor CRT-display calculator, introduced in 1969. Early Small-Scale Integration circuitry with magnetostrictive delay-line register storage, similar technology-wise to Friden 1162. Three line CRT display. 14 Digit capacity, fixed decimal, four function plus memory function, and constant. Two versions: 14-321 provides a single memory register, while 14-322 offers two memory registers. A later revision of both machines replaced the delay line with two MOS shift register ICs.

Any Victor 1500-series Calculator
Desktop printing electronic calculators, made in West Germany by Wanderer Werke, AG. Nixdorf Computer later acquired exclusive distribution rights for the Wanderer calculators, and offered the machines through OEM agreement. Victor Comptometer signed up, and marketed the machines as the 1500-series calculators, after its bad experience with its in-house designed Victor 3900. Known models: 1503 (3 memories), 1503R (3 memories, square root), 1510 (10 memories), 1510R (10 memories, square root).

Victor 1800-1721 Scientific Calculator
The high-end of the Victor 1800-series display calculators. Scientific functions, including trig and logarithms. Panaplex display, 14 digit capacity. Automatic floating decimal.

Any Victor 4000-series Programmable Calculator
A series of four calculators, models 4800, 4700, 4600, and 4500. Programmable printing-only calculator with magnetic card reader for program/data storage. Model 4800 has up to 1000 program steps and 102 register memory storage. 5x7 dot-matrix alphanumeric printer. 14-digit capacity.

Any model Wanderer "Conti" Calculator
Desktop electronic printing calculators produced by German company Wanderer Werke, AG. Numerous models, including the Conti 10, Conti R, Conti 10R, Conti MR, Conti AF, Conti AFD, Conti D, Conti P, Conti M. Any machines or documentation for these machines is wanted. Nixdorf Computer later acquired exclusive rights to the Wanderer Conti calculators, and provided the machines to OEM customers, most notably, Victor Comptometer in the US. The machines were marketed by Victor as the Victor Model 1500.

Walther ETR-1
First electronic desktop calculator sold by the German company famous for its handguns. Walther also manufactured high quality desktop mechanical and electro-mechanical calculating machines. The ETR-1 was the company's first venture into the realm of electronic calculating machines, though the machine was not made by Walther. It was actually made by the Japanese company Ricoh, under an OEM relationship with Walther. The ETR-1 is a twelve digit, four function machine with memory register. It utilizes Nixie tubes for display, and early Japanese small-scale MOS integrated circuits for its logic. Switch-selectable (0, 3 and 5 digits behind decimal) fixed decimal.

Any Wang LOCI-1 Calculator
Wang Laboratories' first electronic calculator, introduced sometime in 1964. Quickly superceded by the Wang LOCI-2, which added more accuracy and programming capabilities.

Any Wang 100-series Calculators
Introduced in mid-1970, the 100-series calculators filled a niche between the now dated Wang 300-series calculators, and the higher-end Wang 700-Series calculators. 12-digit capacity. Nixie display and print-only versions. Small and Medium-Scale DTL & TTL Integrated circuits make up the logic of the machines. Models targeted at business, scientific, and statistical applications.

Wang 370 Programming Keyboard
Programming Keyboard for Wang 300-series Calculating System. Nixie tube display.

Wang 380 Programming Keyboard
Programming Keyboard for Wang 300-series Calculating System. 10-digit Nixie tube display, mag-tape cartridge in back of cabinet for program storage.

Any Wang 400-series Programmable Calculator
Wang's final generation of programmable electronic calculators. Various models, including advanced statistics(Model 462), surveying(Model 487), and scientific(Model 450, 452). Up to 320 steps of learn-mode programmability. Approx. 10 1/2" Wide, 14" Deep, 5 1/2" High. Burroughs Panaplex-style 7-segment planar display versus Nixie tube displays of earlier Wang calculators. Introduced late 1972/early 1973. Uses solid-state MOS RAM and ROM versus magnetic RAM/ROM of earlier Wang calculators. Design based on architecture of earlier Wang 700-series calculators, but updated with newer IC technology.

Any Wang 500-series Programmable Calculator
Programmable 3nd Generation Wang Scientific Calculator. Available as Model 500 or Model 520, with varying program step and memory capacities. Single-row Nixie tube display. Optional built-in Magnetic Cassette tape drive and 21-column 160LPM drum printer. Based on architecture of Wang 700-series calculators, but somewhat scaled back to reduce cost. Uses small and medium-scale integrated circuit technology, with Wang's first use of solid state (Intel 2102 1Kx1 bit RAM) memory instead of magnetic core. Utilizes ferrite transformer microcode store design of Wang 700-series.

Any Wang C-series Desktop Calculator
Wang's last generation of desktop calculators. Very similar to the 400-series calculators, but without learn-mode programming capabilities. Burroughs Panaplex-style 7-segment planar display. Introduced late 1972/early 1973. Uses solid-state RAM and ROM versus magnetic RAM/ROM of earlier Wang calculators.

Wyle Model WS-02 'Scientific' Electronic Calculator
Early desktop programmable, introduced in late 1964. Eight inch integrated CRT display. Six lines of 24 digits (grouped in three digit chunks) on display. One-key Square Root, three 'memory' registers. Optional punched card reader. A product of Wyle Laboratories, El Segundo, California.