Skip to main content

Two models developed by the late Dr. Hagiwara KCGI, the first president of KCGI, became "Heritage of Information Processing Technology".

KT-Pilot" and "Kyoto University QA-1," computers developed by Dr. Hiroshi Hagiwara (passed away on January 8, 2014), the first president of Kyoto College of Graduate Institute of Information (KCGI), while he was a student at Kyoto University, were recently recognized as "Heritage of Information Processing Technology" by the Information Processing Society of Japan (IPSJ) in 2013.Among these, "KT-Pilot" is the prototype of the high-speed computer "TOSBAC-3400" (certified as the first information processing technology heritage), which was jointly developed by Dr. Hagiwara and Toshiba Corporation and is preserved and exhibited in the "KCG Museum" at Kyoto Computer Gakuin Kyoto Station.The certification of these two models proves once again that Dr. Hagiwara is a world authority on computer development, electronic circuits, information theory, and communication method research, and is a pioneer in the field of computers in Japan.

The KT-Pilot was jointly developed and manufactured by Dr. Hagiwara and Toshiba in 1961, and was the first device in Japan to adopt a full-scale microprogramming system.The logic circuit uses a high-speed basic circuit with silicon mesa-type transistors and a parallel asynchronous high-speed arithmetic method.Japan's first thin-film memory device was used for storage.It was presented at the IFIP held in Munich in August 1962, and was highly evaluated as the world's fastest computer.It is preserved and exhibited at the Toshiba Museum of Future Science (Saiwai-ku, Kawasaki).

Kyoto University QA-1 was developed from 1974 to 1977 by Prof. Hagiwara, Shinji Tomita, Shigeru Koyanagi, and Kiyoshi Shibayama of the Faculty of Engineering, Kyoto University, with the cooperation of many students, for the purpose of high-speed processing of graphics.It is not a graphics-only computer, but a more general-purpose device, and features a method that allows the simultaneous specification of four different ALU operations, four memory accesses, and one sequential control.It is preserved at the National Museum of Nature and Science (Tsukuba City, Ibaraki Prefecture).

In addition to "TOSBAC-3400", there are five machines certified as "Heritage of Information Processing Technology" that are preserved and exhibited in the KCG Museum: "OKITAC 4300C System" (first certification in 2008), "NEAC-2206" (certification in 2010), "NEAC S-100 System" (certification in 2011), and "Sharp MZ-80K" (certification in 2012).

Dr. Hiroshi Hagiwara is a graduate of the Faculty of Engineering, Kyoto University, and a doctor of engineering.He has served as president of the Information Processing Society of Japan and as a member of the Science Council of Japan.After serving as a professor of the Faculty of Engineering at Kyoto University, a professor of the Faculty of Science and Engineering at Ryukoku University, and the Director of the KCG Institute of Information Technology, he was appointed President of KCGI in April 2004, and served until March 2008.He has made a great contribution to the development of KCGI.In April 2009, he was awarded the Order of the Sacred Treasure, Gold Rays with Neck Ribbon.