| Manufacturer: |
Brother Industries, Ltd. |
| Model Number: |
JC 2-412 (Calther 412) |
| Serial Number: |
B 900390 |
| Date of Manufacture: |
1969 |
| Manufactured In: |
Japan |
| Original Price: |
$795 |
| Weight: |
10 1/2 Pounds |
| Size: |
10 7/16" Wide, 14 3/4" Deep, 5 1/5" High |
Power Requirement: |
23 Watts, 115VAC |
| Display Technology: |
Nixie Tube, 0-9 and Right-Hand Decimal Point |
|
Discrete Neon Bulbs for Multiplication Indicator |
|
No leading zero suppression |
| Logic Technology: |
Mitsubishi M5300-series Small Scale Bipolar TTL IC's |
|
3 Plug-in Circuit Boards, 118 IC's, 51 Transistors, 198 Diodes
|
| Clock Frequency: |
40KHz |
| Digits of Capacity: |
12 |
| Decimal Modes: |
Automatic floating decimal |
| Arithmetic Logic: |
Arithmetic |
|
Unusual display of both multiplier and multiplicand for multiplication |
| Math Functions: |
Four Function |
| Constant: |
Multiplication only using [R] key |
| Memories: |
None |
| Features: |
Accumulate mode for sum-of-products calculations |
|
Backspace key for digit at a time correction |
| Notes: |
Does not support negative numbers (tens complement) |
|
Pressing [-] key with no prior operation performs tens complement of number in display |
| Performance (Mfg. Claimed): |
Addition/Subtraction: 10mS |
|
Multiplication: 85mS |
|
Division: 177mS |
|
Marketed as the ProCal 412 by Robert Kling Wetzlar, GmbH, in East Germany, under the "Kling" brand name |