Pendulum clock

src: i.ytimg.com A pendulum clock is a clock that uses a pendulum, a swinging weight, as its timekeeping element. The advantage of a pendu...

Liquid-crystal display

src: fritzing.org A liquid-crystal display ( LCD ) is a flat-panel display or other electronically modulated optical device that uses...

Clock synchronization

src: image.slidesharecdn.com Clock synchronization is a topic in computer science and engineering that aims to coordinate otherwise indepen...

Hammond Clock Company

src: upload.wikimedia.org The Hammond Clock Company of Chicago, Illinois, produced electric clocks between 1928 and 1941. It was one of the...