| Manufacturer: |
Nippon Columbia Co., Ltd. (Denon) |
| Model Number: |
DEC-61A4 |
| Serial Number: |
V112179 |
| Date of Introduction: |
September, 1968 |
| Date of Manufacture: |
Late 1969 |
| Manufactured In: |
Tokyo, Japan |
| Original Price: |
$995.00(US) |
| Weight: |
13 Pounds |
| Size: |
11 1/4" Wide, 15 1/2" Deep, 3 1/2" High |
| Power Requirement: |
110V AC |
| Display Technology: |
Nixie Tube, 14 Tubes, Right Hand Decimal Point |
| Logic Technology: |
Mitsubishi Small-Scale DTL Integrated Circuits |
|
Large Scale MOS Shift Registers for Working/Memory Register storage |
|
Large number of discrete diode logic gates |
| Digits of Capacity: |
14 |
| Decimal Modes: |
Automatic Floating or Fixed with or without roundoff at 0, 2, 3 or 6 digits behind decimal point |
| Arithmetic Logic: |
Arithmetic |
| Math Functions: |
Four Function with Square Root |
| Constant: |
Keyboard Push-On/Push Off Switch [K], Multiply/Divide Only |
| Memories: |
One, Accumulator Type ([M+], [M-]) w/Sum-of-Products Mode [T] |
| Performance: |
(Mfg. Stated, Apparent Averages) |
| Addition/Subtraction: |
10 Milliseconds |
| Multiplication/Division: |
250 Milliseconds |
| Square Root: |
500 Milliseconds |
| Notes: |
Nippon Columbia's First Marketed Electronic Calculator |
|
Same machine marketed as the
Denon DEC-621 without square root key on keyboard |
