DIGITAL WALL CLOCKWRITTEN

BY CHIGBUNDU UDO. U 07/HWP/0025/EE

OBAGIDI ROMANUS .A 07/HWP/0022/EE

EKE KINGSLEY .C 07/HWP/0024/EE UMOH DONATUS. E 07/HWP/0026/EE

  DEPARTMENT OF ELECTRICAL/ELECTRONICS

ENGINEERING.  

AUGUST 2010 

INTRODUCTION Digital clock is a clock that displays time using numbers and not with hands. It is an electronic clock which has predominately replace the mechanical Clocks. They are much reliable, accurate, maintenance free and portable. In general, there are two kinds of electronics Clocks. They are analogue clock and digital clock. But digital Clocks are more common and independent of external source. In this work, the microcontroller-based digital clock is constructed. The input frequency is taken from the 50 Hz clock frequency circuit. To show the time, seven-segments light Emitting Diodes (LEDs) and four LEDs are used.

BLOCK DIAGRAM OF THE SYSTEM

CIRCUIT DIAGRAM OF A DIGITAL WALL CLOCK

CONCLUSION

Digital clocks are electronic devices that used microcontroller to generate a 7-bit code which controls a 7-segment display to provide visual representation of the decimal digit. Though, all clocks measures time but different clocks can have status or importance. Hence a digital wall clock can be considered a form of art today. As such, digital wall clocks are not only used for their accurate timekeeping capacity but mainly for their decorative function. The abundance of such varied designs has made it impossible not to find a clock matching a particular room design.