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?]
- Ibm 7090
computer A transistorised version of the IBM 709 which was a very popular high end computer in the early 1960s. The 7090 had 32Kbytes of 36-bit core memory and a hardware floating point unit. Fortran was its most popular language, but it supported many others. It was later upgraded to the IBM 7094, and a […]
- Ibm 7094
computer A faster version of the IBM 7090 with more index registers. (1997-02-23)
- Ibm 801
The original IBM RISC processor, developed as a research project. It was named after the building in which it was designed. [Features? Dates?] (1995-03-01)
- Ibm compatible
computer A computer which can use hardware and software designed for the IBM PC (or, less often, IBM mainframes). This was once a key phrase in marketing a new PC clone but now in 1998 is rarely used, the non-IBM wintel personal computer manufacturers such as Compaq, Dell and Gateway 2000 and OS vendor Microsoft […]