Digital Clock(1956)

An electronic form of timekeeping is born.

* Clocks usually have have two jobs.

* One is to display the right time; the other is to give a measurement of a time interval.

* Digital clocks are numeric.

* Hours,minutes and seconds are represented by numbers and the display can be made small and linear.

* Although German Inventor Josef Pallweber  patented a digital watch as early as 1883, the development of the digital clock proper is closely associated with the history of the digital displays.

* The earliest examples of these were the glowing end of valve tubes that can indicate numbers.

* These were much loved by the nuclear physics instrumentation industry in the 1950s.

*The modern digital clock relied significantly on the development of the light emitting diode (LED) and liquid crystal display (LCD).

* The first commercially usable LEDs were developed in the 1960s, and the first active matrix LCD panel was produced in 1972.

* Film director Stanley Kubrick famously showed a futuristic digital clock in his 1968 science fiction masterpiece, 2001:A Space Odessey.

* A problem with digital alarm clocks is that they flash to a default setting when switched off and can failed to alarm after a power surge or outage.

* Small and cheap digital clocks have been used in many other devices from microwave ovens to cell phones.

* While digital watches were very popular in 1980s, the analogue display is arguably more fashionable again today.

"The hours of folly are measured by the clock; but of wisdom, no clock can measure."

                                                                                                                    By- William Blake,poet.