MCS-51单片机复位后,程序计数器PC、 堆栈指针SP、端口寄存器P0 -P3、 数据指针DPTR分别为:
A: 0000H,00H,00H,0000H
B: xxxxH,xxH,xxH,xxxxH
C: 0000H,07H,00H,0000H
D: 0000H,07H,FFH,0000H
A: 0000H,00H,00H,0000H
B: xxxxH,xxH,xxH,xxxxH
C: 0000H,07H,00H,0000H
D: 0000H,07H,FFH,0000H
举一反三
- MCS-51单片机复位后,寄存器PC与SP的值分别为( ) A: 0000H,00H B: 0000H,07H C: 0003H,07H D: 0800H,00H
- 51单片机复位后,SP寄存器和PC寄存器的值分别为() A: 00H,0000H B: 00H,0007H C: 07H,0000H D: 07H,0007H
- 单片机复位后,SP、PC、I/O口(P0、P1、P2、P3)的内容为() A: SP=00H;PC=1000H;I/O 口=FFH B: P=00H;PC=0000H;I/O 口=00H C: SP=07H;PC=0000H;I/O 口=FFH D: SP=07H;PC=0000H;I/O 口=00H
- 单片机复位后,SP、PC、I/O口(P0、P1、P2、P3)的内容为( ) A: A. SP = 00H PC = 1000H I/O口= FFH B: B. SP = 00H PC = 0000H I/O口= 00H C: C. SP = 07H PC = 0000H I/O口= FFH D: D. SP = 07H PC = 0000H I/O口= 00H
- MCS-51单片机复位后,寄存器PC与寄存器SP的初始值为(<br/>)。 A: 0000H和00H B: 0000H和07H C: 0003H和07H D: 0800H和00H