Big ben atomic clock

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Big Ben Atomic Clock, GPS Time Sync, Turn Your PC into Big Ben, Keep Your PC on Time. V1.3 Now feature Big Ben Quiet mode.

Realistic working replica of Big Ben. With chimes and full hand movement. Plus Digital Display

Set your PC time to the precise time from atomic clocks on-board NASA USA GPS satellites which orbit the Earth ! Yes, its amazing what the technology revolution has brought us today.The GPS system is a constellation of 32 polar orbiting satellites primarily intended for navigation and positioning. However, in order to provide precise positioning information, each satellite has a very precise atomic clock installed. These very precise clocks can be used by ground-based receivers to obtain accurate timing information.

By utilising a well-located GPS antenna, with built in timing receiver, this can provide a consistent supply of accurate time stamps to a host computer. The timing receiver can communicate accurate time to a host computer via a serial or USB interface. Driv