Specifications for Monroe 1860

Manufacturer: Monroe Division of Litton Business Systems
Model Number: 1860-11 (1024 Program Steps/128 Memory Registers)
Postfix Defines Memory Configuration:
First Digit: Program Step Capacity
1-512, 2-1024, 3-1536, 4-2048, 5-2560, 6-3072, 7-3584, 6-4096
Second Digit: Memory Register Capacity
1-64, 2-128, 3-192, 4-256, 5-320, 6-384, 7-448, 8-512
Date of Manufacture: 1973
Manufactured In: USA by Computer Design Corp.
Original Price: $3,240 (Per Sept. 1973 Price List)
Weight: 22 1/2 Pounds
Size: 15" Wide, 14 1/2" Deep, 7" High
Power Requirement: 110V AC, 60Hz
Display Technology: Seiko EP-10x-series Drum Impact Printer, 21 columns
2-color(black, red), 2-1/2 lines per second.
Local Storage: Built-in Sankyo Seiki "SANAC" Magnetic Card Reader/Writer
Capacity of 256 Program Steps or 32 Memory Registers per edge
Logic Technology: Second-Generation Compucorp "ATL" LSI Chipset
Chipset Designed by Computer Design Corp.
Chipset Fabrication by American Microsystems (AMI)
Logic contained on nine plug-in circuit boards
MOS Dynamic RAM for program/register storage
MOS Mask-Programmed ROM for microcode
Digits of Capacity: Internal: 13 Digits Mantissa + 2 Digits Exponent
Printed: 10 Digits Mantissa + 2 Digits Exponent
Accuracy: Add, Subtract: 13 digits
Multiply, Divide/Reciprocal: 13 digits, rounded to 13th digit
xy, Logarithm, Antilogarithm: +/- 1 digit in 11th digit
<&sqrt;: +/- 3 digits in 13th digit
x2 statistic, Linear Regression: +/- 5 digits in 13th digit
Decimal Modes: Fixed, 0-9 digits behind decimal by [SET D.P.] key
Arithmetic Logic: Algebraic
Arithmetic Logic: Parenthesis nesting to two levels
Math Functions: Comprehensive compliment of statistical and scientific functions
Constant: Automatic for multiply/divide
Memories: 128 registers (as equipped)
64 registers in base machine, expandable in 64-register increments for $270
Programmable: Yes, Learn Mode (LEMP)
512 Step Base Capacity (1024 steps as-equipped)
Expandable in 512-step increments for $270
Extensive Test & Branch Capabilities
Six-Level Subroutine Nesting
Program Editing Features
Other Features: Extensive I/O Interfacing Capabilities
Standby power mode to keep program & memory content alive
Two-keypress input buffer on keyboard
Peripherals: Mark Sense/Punched Card Reader
Magnetic Tape Cassette Unit
X-Y Plotter
Output-Only Typewriter (Diablo Hy-Type)
I/O Typewriter (Diablo Hy-Type)

Previous Machine: Sharp EL-8109
Next Machine: Texas Instruments SR-60

Related Machines: Compucorp 120
Compucorp 122E
Compucorp 140
Monroe 1665

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Monroe 1860 Specifications

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