| Manufacturer | Remington Rand |
|---|---|
| Release date | 1952; 73 years ago (1952) |
| Successor | UNIVAC 120 |
 UNIVAC 120 | |
| Manufacturer | Remington Rand |
|---|---|
| Release date | 1953; 72 years ago (1953) |
| Weight | 3,230 lb |
| Predecessor | UNIVAC 60 |
| Successor | UNIVAC 1004 |
TheRemington Rand 409, apunched card calculator which was programmed with aplugboard, was designed in 1949.[citation needed] It was sold in two models: theUNIVAC 60 (1952) and theUNIVAC 120 (1953). The model number referred to the number of decimal digits it could read from each punched card.[1]
The machine was designed in "The Barn", at 33 Highland Ave. inRowayton, Connecticut, a building that currently houses the Rowayton Public Library and Community Center.
These machines were discontinued when theUNIVAC 1004 was introduced in 1962. About 1000 total had been produced by 1961.
Numbers were fixed-point and of variable length (one to ten digits). Arithmetic was done in floating point, but all results were converted to fixed point when stored in memory.
Digits are represented inbi-quinary coded decimal. Each digit of memory storage contained five tubes. Four of these represented the digits 1, 3, 5, and 7, while the fifth tube represented 9 if activated alone but added 1 to the value if activated together with another tube.
| Digit | 1 | 3 | 5 | 7 | 9 |
|---|---|---|---|---|---|
| 0 | |||||
| 1 | * | ||||
| 2 | * | * | |||
| 3 | * | ||||
| 4 | * | * | |||
| 5 | * | ||||
| 6 | * | * | |||
| 7 | * | ||||
| 8 | * | * | |||
| 9 | * |
| RR 409 | model 60 | model 120[2] |
|---|---|---|
| Number of tubes | ? | 800 |
| Decimal digits of storage | ? | 438 |
| Weight | ? | 3,230 lb |
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