Computing Dictionary
IBM 709 definition
computer A computer made by
IBM oriented toward scientific work. The 709 had the same basic architecture as the
IBM 704 but with many
I/O and performance refinements over the 704.
The IBM 709 (like the 704) had 36-bit memory words, 15-bit addresses and instructions with one address. A few
index register instructions had the infamous 15-bit decrement field in addition to the 15-bit address.
The
IBM 7090 was a transistorised version of the 709.
[Difference between 704 and 709?]
(1999-01-19)
