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.

* published in Accumu VOL.9 (Japanese Only)
KCG 35th Anniversary [Discussion on the development of TOSBAC 3400]
- Hiroshi Hasegawa / Kohei Amou / Shigenori Matsushita-

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.