Artifact Details

Title

Bendix G-15 module

Catalog Number

X181.83

Type

Physical object

Date

1956 ca.

Manufacturer

Bendix Corporation

Identifying Numbers

Other number 1C 1117C Etched on wiring side
Other number CF2 Etched on wiring side

Dimensions

overall: 1 3/8 in x 7 1/4 in x 3 1/2 in

Description

The Bendix G-15 was a very popular mid-size engineering computer introduced in 1955. By 1961, over 300 were in use with another 300 on order. The base system sold for $51,000 or could be leased for $1,530 per month. The CPU used 450 vacuum tubes in modules like these. The G- 15 used a 2K magnetic drum for storage and had a 29-bit word length and was used in many military and oil company installations. For more complete documentation, please refer to BRL Report (Weik, ed.), pp. 66- 85. Basic machine statistics: Word size: 29 bits Instruction set: 125 instructions Internal number representation: binary Arithmetic system: fixed-point Storage: Magnetic Drum, Magnetic Tape Drum: Size: 2, 176 words (63,104 bits) Access Time: 14.5ms (av), 540 us (min) Tape: Size: 4 tape drives (max) Bit Density: 57cpi Number of Tracks:6 Transfer Rate: 427cps Input: Typewriter, Card Reader, Paper Tape Output: Typewriter, Card Punch, Paper Tape, Line Printer (IBM 402) Device Technology: CPU: Vacuum Tubes (450), Diodes (2,500) Power Consumption: 3.5kW (110V @ 50A), no A/C required with adequate ventilation.

Category

Component: circuit board / module

Credit

Gift of Harry D. Huskey

Lot Number

X181.83