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PIC Circuits Gallery
Digital Clock

On this page, I will introduce the PIC controled circuit which is the heart of Ultra High Accuracy Digital Clock.
For the details of the clock, refer to "Ultra High Accuracy Digital Clock version 2".
As for PIC, PIC16F873 is used in the relation of the input-output port.
Also, to make a circuit compact, CPLD is used for the peripheral.

Hardware Software
Circuit drawing

Pattern drawing

Circuit explanation

Parts explanation
Flow chart


Processing explanation

Operation confirmation

As for above JAVA applet, refer to "Digital clock Applet (Ver2)".