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AT89C4051 to work as a Real time clock

AT89C4051 to work as a Real time clock

Its a digial clock which make use of AT89C4051 to work as a Real time clock.
Figure shows the circuit diagram for the digital clock. Port 1 of the controller (AT89C4051) is used as the data lines for the LCD (starting from pin 7- pin14 of LCD). As you can see there is not much change in the hardware except the LCD, here i am using a 20 x 4 lines LCD display.
The source code for the project is written in C-language, and compiled using Keil C compiler, you can download the c-code, schematic, and if you don’t have a cross compiler then you can directly burn the HEX file on to your chip clockV1.1

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