Electronic Circuits and Projects Forum

10th December 2009 05:19 AM

there r 7 LEDs and i have to glow each one of them one by one using 8051.so i need da circuit diagram with its programs ,can anyone help me.

10th December 2009 05:20 AM

its very urgent ,can sombody reply fast

14th December 2009 09:36 AM

Here is the circuit diagram
This includes 4 LEDs, modify it for 7 LEDs

Code:

;Code for LED flashing

START:      MOV P1,#01H
            CALL DELAY
            MOV P1,#02H
            CALL DELAY
            MOV P1,#04H
            CALL DELAY
            MOV P1,#08H
            CALL DELAY
            JMP START
DELAY:
;write delay routine here
            RET

14th December 2009 11:49 PM

Yep, or you can make it a little "intelligent"

Code:

MAIN:	        MOV A,#1
		CPL A
CICLE:
		MOV P1,A
		RL A
		CALL DELAY
		JMP CICLE
DELAY:
RET

The connection is the same rushi proposed

Electronic Circuits and Projects Forum

can u help me out

can u help me out