Suwa Seikosha (Sieko Epson) Corporation

Where the first quartz wristwatch was developed. It is registered on the List of the Institute of Electrical and Electronics Engineers (IEEE) Milestones as a key advance in Electrical Engineering.

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da Vinci and the Renaissance Map

Coordinates

Latitude: 35.672979000000
Longitude: 139.404061000000

Timeline of Events Associated with Suwa Seikosha (Sieko Epson) Corporation

Crystal Oscillator - Quartz Clock

1927 to 1928

This modern clock uses an electronic oscillator controlled by a quartz crystal to keep time. Because of the very percise fequency of the crystal oscillator, these clocks are at least an order of magnitude more accurate than mechanical clocks.

Crystal Oscillator - Quartz Clock

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TimelineJS
Date Event Manage

Sieko Quartz-Astron
1927 to 1928

Crystal Oscillator - Quartz Clock

This modern clock uses an electronic oscillator controlled by a quartz crystal to keep time. Because of the very percise fequency of the crystal oscillator, these clocks are at least an order of magnitude more accurate than mechanical clocks.