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The Ruputer is a wristwatch computer developed in 1998 by Seiko Instruments, a subsidiary of the Seiko Group. It was introduced on 10 June 1998. [1] In the US, it was later marketed as the onHand PC by Matsucom. The Ruputer has a 16-bit, 3.6 MHz processor and 2 MB of non-volatile storage memory and 128 KB of RAM.
In 1988, Seiko invented the world's first wristwatch with an innovative mechanism called "Auto Quartz", in which a rotating oscillating weight rotates in response to the wearer's arm movements, generating electricity to power the quartz. This mechanism was developed with the aim of creating a quartz watch that does not require battery replacement.
Japanese company Seiko pioneered the technique which it unveiled at the Baselworld 1986 trade show under the trial name AGM. [2] The first such watch was released in Germany in January 1988 and April of the same year in Japan (under the name Auto-Quartz). [3]
Button, coin, or watch cells. A button cell, watch battery, or coin battery is a small battery made of a single electrochemical cell and shaped as a squat cylinder typically 5 to 25 mm (0.197 to 0.984 in) in diameter and 1 to 6 mm (0.039 to 0.236 in) high – resembling a button.
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The commercial introduction of the quartz watch in 1969 in the form of the Seiko Astron 35SQ, and in 1970 in the form of the Omega Beta 21 was a revolutionary improvement in watch technology. In place of a balance wheel, which oscillated at perhaps 5 or 6 beats per second, these devices used a quartz-crystal resonator , which vibrated at 8,192 ...
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