PIC16F84A Microcontroller based Digital Clock

[dineshwick]

Hi Friends,

This is a PIC16F84A Microcontroller based digital clock. It displays hours, minutes and seconds using six 7 segments displays.
The circuit has three push button switches to reset and set hours and minutes.
It shows time in 12 hour format.

Use the following link to download schematic, source code and compiled hex file -

http://www.manelsoft.com/projects/pi...tal_clock.aspx



Have a nice day.!

[Art]

Nice

But I have to ask.. There's a left over pin on portB, 3 more on PortA,
and the extra chip is only giving you four more pins than it's using.

[Jerson]

Nice effort. However there seems to be no inter-digit blanking thereby giving the display a washed out appearance.

I suggest you modify this routine to create the blanking

DELAY		MOVWF PORTB
		DECFSZ	DEL,1
		GOTO	$-.1
		MOVLW 0FFH
		MOVWF PORTB
		CALL CLOCK
		RETURN

and remember to turn PORTB back to 0FFH to be able to read your keys

Cheers
Jerson