HITAC 10

HITAC 10

HITAC 10



Manufactured in 1969
Manufactured by Hitachi, Ltd.
Owner Division of Systems and Information Technology
Institute of Symbiotic Science and Technology
Tokyo University of Agriculture and Technology
Location of historical materials Department of Computer and Information Sciences
Tokyo University of Agriculture and Technology
2-24-16 Naka-cho, Koganei-shi, Tokyo 184-8588
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Contact Tokyo University of Agriculture Technology
Professor Keiichi Kaneko Tel.+81-43-388-7155


The HITAC 10 was Japan's first minicomputer, developed by Hitachi and announced in February 1969. It had a 16-bit word architecture. All circuit elements were implemented in ICs, and magnetic core was used for the memory unit. The system had memory capacity ranging from 4 K word to a maximum 32 K word, a cycle time of 1.4 milliseconds, an addition/subtraction arithmetic speed of 2.8 milliseconds, 16 basic instructions (up to 12 instructions could be added as an option), and could be connected to a maximum of 64 input/output devices. The system was equipped with a data typewriter as a basic input/output device, and paper tape was used as a portable storage media. A double-precision arithmetic mechanism was used for scientific and engineering computation. The available software included a monitor (early OS functions), assembler, compilers (FORTRAN, BASIC) and various input/output subroutines, and software development efficiency was high. The machine was used for a wide range of applications due to its distinctive features -- such as compactness, low price, high-reliability and ease of software creation. In addition to personal use in scientific and engineering calculation, it was widely used as a built-in controller for monitoring and control, automatic control, production line control, control of machine tools and robots, drafting/design via plotter control, and data communication control, and in instruments for gas chromatography, fluorescence analysis and blood analysis. In the basic configuration with typewriter, it cost ¥4.95 million.