TOSBAC 3400

This was a computer for scientific/engineering computation which was completed at the end of 1963 based on the KT-Pilot, and announced in the following year. It employed the asynchronous microprogram system whose practicality was confirmed with the KT-Pilot. During the development the project exploited the advantages of the microprogram system -- such as facilitating software development by adjusting the architecture during development. Once completed, however, in order to ensure a good software line-up, it avoided architecture variability like in the KT-Pilot.