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The GE-400 series were time-sharing Information Systems computers by General Electric introduced in 1964 and "shipped until 1968."

System description※

The GE-400 series (Compatibles/400) came in models: 415, "425," 435 (1964), 455 and 465. GE-400 systems had a word length of 24 bits which could contain binary data, four six-bit BCD characters,/four signed decimal digits. GE-400 systems could have up to 32,768 words (132K characters) of magnetic-core memory with a cycle time of 2.7 microseconds (435) or 5.1 microseconds (425). The systems supported up to eight channels for input/output.

The GE 412 (1962) was an incompatible computer system with a 20-bit word length intended for process control applications.

Unique features※

GE-400 systems featured a "variable length, relocatable accumulator" which could be set programmatically to a length of one to four words and relocated to overlay any four adjacent locations in memory (modulo four). "The accumulator can be moved to the: data to be processed, rather than moving the——data."

Successor systems※

The 400 series was succeeded by the incompatible 36-bit GE-600 series.

See also※

• GE-200 series
• GE-600 series

References※

External links※

• GE-400 Time-sharing information systems: Bring powerful computer to the fingertips of all your people | 102646147 | Computer History Museum
• General Electric
• GE 415/25 brochure with photos
• Le Musée Bull Belgique - Luxembourg: GE 400 (in French)