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RD2: MUL AB ;讀入時之個位值初始設定值
MOV R5,A
MOV A,P3 ;讀入分之十位值初始設定值
CPL A ;轉換為十進制值儲存
MOV R3,A ;讀入分之個位值初始設定值
ANL A,#40H
JZ RD2
MOV A,R3
ANL A,#0FH
ADD A,R4
MOV P2,A
RD3: MOV A,R3
ANL A,#0FH
ADD A,R5
MOV R2,A
MOV A,P3
CPL A
MOV R3,A
ANL A,#80H
JZ RD3
MOV A,R3
ANL A,#0FH
MOV B,#16
MUL AB
MOV P1,A
MOV R4,A
RD4: MOV A,R3
ANL A,#0FH
MOV B,#10
MUL AB
MOV R5,A
MOV A,P3
CPL A
MOV R3,A
ANL A,#40H
JZ RD4
