基于8052的系统具有地址为00H的输出端口。考虑以下汇编语言程序。
ORG 0100H
MVI A, 00H
LXI H, 0105H
OUT 00H
INR A
PCHL
HLTa) What does the program do with respect to the output port 00H?
b) Show the wave forms at the three least significant bits of the port 00H.
回答：
解释：
这个问题的测验