IBM 7700 Data Acquisition System
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The IBM 7700 Data Acquisition System was announced by IBM on December 2, 1963[1].
It was capable of collecting data from as many as 32 sources simultaneously, process the data and transmit results to up to 16 remote printers, display units or plot boards.
The IBM 7700 was short-lived, being replaced by the IBM 1800[2] on November 30, 1964.
Two IBM 7700 Data Acquisition Systems are known to have existed: one at the University of Rochester[3][4] and the other at Stanford University[5][6]. Both were donated by IBM.
The IBM 7700 was an 18-bit system, with instructions occupying two 18-bit words. Arithmetic instructions generally executed in two or three machine cycles, except for multiply, about 8 cycles, and divide, 12 cycles. A machine cycle was two microseconds. Address space was 262,144 words, but the two machines known to have been built had 16,384, 32,768 or 49,152 words.
Notes
- ^ IBM history page listing the IBM 7700 and its replacement, the IBM 1800
- ^ The IBM 1800 Data Acquisition and Control System
- ^ Eric Anderson's autobiography, in which he mentions that he programmed the IBM 7700 at the University of Rochester
- ^ Eric Anderson's résumé
- ^ Description of Stanford computers from 1953 to 1980
- ^ A paper from the High Energy Physics Lab at Stanford referencing their IBM 7700
External References
Technical details about the IBM 7700 Data Acquisition System are from an IBM Systems Reference Library publication known as File Number 7700-01, Form A22-0798-1, IBM 7700 Data Acquisition System. The publication carries an internal date of January 10, 1964.