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Manufacturer: |
Victor Comptometer Corp., Business Machines Group |
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Model Number: |
4900 |
|
Introduced: |
January, 1976 |
| Serial Number: |
Two Units in Museum |
|
#1: 6025-944 [Exhibited Machine] |
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#2: 5322-494 |
Date of Manufacture: |
#1: Early 1980 [Exhibited Machine] |
|
#2: 1978 |
| Manufactured In: |
USA, Chicago, IL |
| Original Price: |
$2,195 |
| Weight: |
24 Pounds |
| Size: |
12 3/8" Wide, 15 1/2" Deep, 6 5/8" High |
| Power Requirement: |
115V AC, 50/60 Hz |
| Display Technology: |
Dot Matrix (5x7 font) 7-Pin Impact Printer, 120CPS |
| Logic Technology: |
First-Generation Rockwell PPS-4 Microprocessor Family |
| Digits of Capacity: |
14 |
| Decimal Modes: |
Fixed(0 to 9 behind decimal) & Floating (up to 13 behind decimal) |
| Arithmetic Logic: |
Arithmetic |
| Math Functions: |
Four Function, plus Percent & Square Root |
|
Advanced Math Functions accessed by [PR/F] key |
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Trig and Inverse Trig |
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ex, Base 10 & e Logarithm |
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Reciprocal (1/x), π |
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Date Calculation |
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Other as-yet unidentified functions |
| Constant: |
Automatic on all four functions |
| Memories: |
Two basic memories, w/add & subtract function keys |
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[=+] and [=-] keys to add/subtract products/quotients to/from memory |
| Programmable: |
1720 Program Step Memory
|
|
Conditional Branching (+,-,<,>,=)
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|
Subroutine Capability
|
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Tagged and Direct Address Branching
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Direct and Indirect Memory Addressing
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Program List and Trace Functionality
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| Notes: |
Unusual [∩] key for setting roundoff digit position
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