kcg.edu
Mainframe Computers
TOSHIBA

TOSBAC-3400

Certified as Information Processing Technology Heritage in 2009

  • Rakuhoku Campus
  • Hardware
    • Microprogramming
    • Binary 24 bit FWL
    • Addressing 256KW
    • Core memory, transistor circut
    • Card batch processing
  • Practical Training
    • FORTRAN
    • COBOL
    • Assembler (TOSBAC)
  • Computer for scientific/engineering computation
    TOSBAC is Japan’s first microprogrammable computer based on the KT-Pilot which was jointly developed by Kyoto University and Toshiba. It was operated with genuine OS which applied concept of I/O channel.
    KCG was the only school that installed a mainframe computer.
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TOSBAC 3400 TOSBAC 3400 TOSBAC 3400 TOSBAC 3400 TOSBAC 3400

TOSBAC-3400/41

  • Kamogawa Campus (former Demach Campus)
  • Card batch processing
  • Practical Training
    • FORTRAN
    • COBOL
    • Assembler (TOSBAC)
    • ALGOL
  • Background of installation
    Installed TOSBAC-3400/41 system at Kamogawa Campus for practical training as successor of TOSBAC-3400 series installed at Rakuhoku Campus.

Memory of Tosbac
Kaoru Konishi / computer lab staff of that time

Although batch processing was the main use of this computer, I was surprised by its high level computation power. Because students were very much motivated to learn, they often used the computer all night.
I remember that we learned the Multitasking OS with this machine.

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TOSBAC-3400/41 TOSBAC-3400/41 TOSBAC-3400/41 TOSBAC-3400/41 TOSBAC-3400/41 TOSBAC-3400/41