Electronic Digital Computer, TAC

The First electronic digital computer Toshiba produced was TAC (Todai Automatic Computer) which was delivered to the University of Tokyo in March, 1954.

At the time, Mazda Research Institute recognized the future of digital computers and started studying them.
TAC had a cathode-ray tube (CRT) electrostatic memory device and a vacuum tube type arithmetic circuit.
It had the design of a 12-rack mounted implementation circuit which contained 7,000 long-lived vacuum tubes, 16 CRT memory devices, a stable rectifier device, and an operating console.
After Toshiba completed TAC's structure design, it delivered TAC to the University of Tokyo.