Multiplexing in seven segment display

Asked Jun 14 '20 at 07:12

Active Jun 14 '20 at 07:12

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We were asked a question on multiplexing. Why is multiplexing important in utilizing the seven-segment display and which part of the code it performs the multiplexing?

ORG 0000H
START:
    SETB P3.3
    SETB P3.4
    MOV P1, #10100100B
    CALL DELAY
    CLR P3.3
    MOV P1, #10110000B
    CALL DELAY
    CLR P3.4
    SETB P3.3
    MOV P1, #10011001B
    CALL DELAY
    CLR P3.3
    MOV P1, #10010010B
    CALL DELAY
    SETB P3.3
    SETB P3.4
    MOV P1, #10000010B
    CALL DELAY
    CLR P3.3
    MOV P1, #11111000B
    CALL DELAY
    CLR P3.4
    SETB P3.3
    MOV P1, #10000000B
    CALL DELAY
    CLR P3.3
    MOV P1, #10011000B
    CALL DELAY
    JMP START
DELAY: MOV R0, #45H
    DJNZ R0, $
    RET
END

asked Jun 14 '20 at 07:12

Araine

What architecture is this asm for? PIC or something? Please tag it. – Peter Cordes Jun 14 '20 at 11:26
Code suggests there are two segments, with there common connected to P3.3 and P3.4. Is it so? – ajit Jun 15 '20 at 04:45

Multiplexing in seven segment display

0 Answers0