||Unoke Electronic Industries (now, PFU LIMITED)
|Location of historical materials
||Nu 98-2 Unoke, Kahoku-shi, Ishikawa 929-1192 Japan
PFU LIMITED (headquarters)
||Not open to the public (Ask for a visit)
||PFU LIMITED (headquarters) General Affairs Department
The USAC-3010 was a data processing computer designed for small and mid-size firms with its compact size and low price (in the 6 to 8 million yen class). The first model was released in 1962 and a self-developed core memory that was still at the trial stage was installed.
This machine had various user friendly features that were orientated toward the market for office computers. The machine employed a system of keeping the sequence counter, index register, and a buffer register in the core memory. This made it possible to improve programming efficiency and achieve a significant reduction in hardware. To distribute weight and make transport easier, the power supply unit of the machine was separated and placed on top of the main unit. The console (provided on the stand to the left of the main unit) was used for tasks like main unit operation and displaying the content of registers during program debugging. Detailed control was done using a keyboard and printer. This minimized the use of switches and lamps, reducing costs and simplifying the system.
(1) A 9-digit decimal word system
(2) 40 instructions
(3) Add-subtract speed using the 240 kcycle dynamic logic circuits of 1.6ms
(4) Use of core memory for the main memory