The FACOM 128 was a relay-based
electromechanical computer
A mechanical computer is a computer built from mechanical components such as levers and gears rather than electronic components. The most common examples are adding machines and mechanical counters, which use the turning of gears to increment out ...
built by
Fujitsu
is a Japanese multinational information and communications technology equipment and services corporation, established in 1935 and headquartered in Tokyo. Fujitsu is the world's sixth-largest IT services provider by annual revenue, and the la ...
. Two models were made, namely the FACOM 128A, built in 1956, and the FACOM 128B, built in 1959. , a fully working FACOM 128B is still in working order, maintained by Fujitsu staff at a facility in
Numazu
is a city located in eastern Shizuoka Prefecture, Japan. , the city had an estimated population of 189,486 in 91,986 households, and a population density of 1,014 persons per km2. The total area of the city is .
Geography
Numazu is at the nor ...
in
Shizuoka Prefecture
is a prefecture of Japan located in the Chūbu region of Honshu. Shizuoka Prefecture has a population of 3,637,998 and has a geographic area of . Shizuoka Prefecture borders Kanagawa Prefecture to the east, Yamanashi Prefecture to the northea ...
.
The FACOM 128B processes numbers using a
bi-quinary coded decimal representation.
See also
*
FACOM 100
The FACOM 100 was an early electromechanical computer built by Fujitsu in 1954 which used binary-coded decimal arithmetic.
The design of the later FACOM 128 was influenced by experience gained from building the FACOM 100.
References
See als ...
*
FACOM
FACOM ("Fujitsu Automatic COMputer") is a trademark used for Fujitsu's computers. The first product is FACOM 100, built in 1954. In May 1990, the brand name of FACOM was abolished and changed to Fujitsu.
FACOM numbering roughly follows the follow ...
References
External links
*
Electro-mechanical computers
1950s computers
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