找考题网-背景图
单项选择题

已知(SP)=40H,片内RAM(60H)=0FH,执行PUSH 60H和POP 50H两条指令后,SP及50……

已知(SP)=40H,片内RAM(60H)=0FH,执行PUSH 60H和POP 50H两条指令后,SP及50H中内容各为 ( )

A.(SP)=39H,(50H)=23H
B.(SP)=40H,(50H)=0FH
C.(SP)=41H,(50H)=0FH
D.(SP)=40H,(50H)=60H