汇编语言电子时钟、做课程设计是很理想的资源哦 tab db 0c0h,0f9h,0a4h,0b0h,099h,092h,082h,0f8h,080h,090h,088h,083h,0c6h,0a1h,086h,08eh porta1 equ 200h portb1 equ 204h portc1 equ 208h portp1 equ 20ch porta2 equ 201h portb2 equ 205h portc2 equ 209h portp2 equ 20dh porta3 equ 202h portb3 equ 206h portc3 equ 20ah portp3 equ 20eh porta4 equ 203h portb4 equ 207h portc4 equ 20bh portp4 equ 20fh hour dw 23