Just add "0": The IBM 7090 replaces the IBM 709

15 September 1963

The IBM 7090 was installed at CERN in 1963. It was about four times more powerful than the 709. The computer was connected to a device call a Hough-Powell digitizer (HPD) – a machine that scanned films from bubble chambers, measured important tracks, and sent the information directly to the 7090. A second device, "Luciole", was also connected to the computer, providing fully automatic measurements from spark-bubble chambers. Over 300,000 frames of spark-chamber film were automatically scanned and measured in this way, beginning the trend towards online use of computers for processing experimental data. 

Technical specifications
IBM 7090
Ran at CERN 1963 to 1965
Transistorized second-generation machine with a 2.18-microsecond clock cycle
Core storage: 32K words of 36 bits, 4.36-microsecond access time
Card 1/0, Tape units wrote on 7 tracks at 112.5 inches per second, 200 to 556 bytes per inch
8 data channels
Interrupt system
FORTRAN compiler
Basic monitor operating system (IBSYS)
Connected online to flying-spot digitizers (HPD and Luciole) to measure bubble and spark chamber films


Computing at CERN

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