基于单片机的数字秒表设计

I基于单片机的数字秒表设计主程序 ORG00H START: MOVP0,#00H JBP1.0,$ CALLFILTER JNBP1.0,$ MOVR0,#00H PRESS_1: MOVA,R0 MOVP0,A MOVR5,#10 ADD_1: MOVR6,#200 CALLDELAY DJNZR5,ADD_1 MOVA,R0

ADDA,#01H DAA MOVR0,A JMPPRESS_1 PRESS_2: CALLFILTER JBP1.0,PRESS_3 JMPPRESS_2 PRESS_3: JBP1.0,$ CALLFILTER RELEASE: JBP1.0,START JMPRELEASE DELAY: MOVR7,#248 JNBP1.0,PRESS_2

DJNZR7,$ DJNZR6,DELAY RET FILTER: MOVR6,#60 F1: MOVR7,#248 DJNZR7,$ DJNZR6,F1 RET END

IIPCB电路图 III实物图