基于AT89C52单片机的LED点阵显示电子钟设计(仿真及源程序)

MOV R5, #08H LOOP11: MOV A, 3BH MOV DPTR,#TABE MOVC A,@A+DPTR MOV P2, R4 MOV P0, A MOV P1, #0FDH INC 3BH INC R4 LCALL DELAY DJNZ R5, LOOP11

MOV A,32H ;显示要显档的数字 MOV B, #08H MUL AB MOV 3BH, A MOV R4, #00H MOV R5, #08H LOOP22: MOV A, 3BH MOV DPTR, #TABE MOVC A,@A+DPTR MOV P2, R4

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MOV P0, A MOV P1, #0FBH INC 3BH INC R4 LCALL DELAY DJNZ R5, LOOP22

MOV A,33H ;显示要显档的数字 MOV B, #08H MUL AB MOV 3BH, A MOV R4, #00H MOV R5, #08H LOOP33: MOV A, 3BH MOV DPTR, #TABE MOVC A,@A+DPTR MOV P2, R4 MOV P0, A MOV P1, #0F7H INC 3BH INC R4

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LCALL DELAY DJNZ R5, LOOP33

MOV A,34H ;显示要显档的数字 MOV B, #08H MUL AB MOV 3BH, A MOV R4, #00H MOV R5, #08H LOOP44: MOV A, 3BH MOV DPTR, #TABE MOVC A,@A+DPTR MOV P2, R4 MOV P0, A MOV P1, #0EFH INC 3BH INC R4 LCALL DELAY DJNZ R5, LOOP44 POP PSW POP ACC RET

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DELAY: MOV 37H, #50 DEL: MOV 38H, #4 DJNZ 38H, $ DJNZ 37H, DEL RET

TABE: ;0

DB 00H,18H,24H,24H,24H,24H,18H,00H ;1

DB 00H,10H,30H,10H,10H,10H,38H,00H ;2

DB 00H,18H,24H,04H,18H,20H,3CH,00H ;3

DB 00H,18H,24H,18H,04H,24H,18H,00H ;4

DB 00H,08H,18H,28H,7CH,08H,08H,00H ;5

DB 00H,1CH,10H,18H,04H,24H,18H,00H ;6

DB 00H,18H,24H,38H,24H,24H,18H,00H ;7

DB 00H,3CH,28H,08H,10H,10H,10H,00H

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