指令MOVR0,#20H执行前(R)=30H,(20H)=38H,执行后()
A: (R0)=00H
B: (R0)=20H
C: (R0)=30H
D: (R0)=38H
A: (R0)=00H
B: (R0)=20H
C: (R0)=30H
D: (R0)=38H
举一反三
- 指令MOVR0,#20H执行前(R)=30H,(20H)=38H,执行后() A: (R0)=00H B: (R0)=20H C: (R0)=30H D: (R0)=38H
- 指令MOVR0,20H执行前(R0)=30H,(20H)=38H,执行后(R0)=()。 A: 20H B: 30H C: 50H D: 38H
- 执行如下三条指令后,20H单元的内容是() M O V R 0,#20H M O V 40H,#0 F H M O V ﹫R 0,40H
- 如果(A)=5CH,(R0)=30H,(30H)=7AH,执行XCHD A, @R0;结果(A)=_______H,((R0))=_______H。
- 假设(30H)=60H,(60H)=55H,则执行下列指令后,(A)=H,MOV R0,30HMOV A,@R0