PIC16F84A Microcontroller based Digital Clock

[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