设R0=42H,(42H)=80H,A=48H,(50H)=08H,指出下列程序执行后,上述各单元内容的变化。 MOV A,@R0 MOV @R0,50H MOV 50H,A
设R0=42H,(42H)=80H,A=48H,(50H)=08H,指出下列程序执行后,上述各单元内容的变化。 MOV A,@R0 MOV @R0,50H MOV 50H,A
如果(A)=42H,(R1)=49H,(49H)=36H,执行指令XCH A, @R1后;结果(A)=,(49H)=。( ) A: 49H 42H B: 42H 36H C: 36H 42H D: 49H 36H
如果(A)=42H,(R1)=49H,(49H)=36H,执行指令XCH A, @R1后;结果(A)=,(49H)=。( ) A: 49H 42H B: 42H 36H C: 36H 42H D: 49H 36H
字符“B”的ASCII码值为42H,则可推出字符“K”的ASCII码值为 H
字符“B”的ASCII码值为42H,则可推出字符“K”的ASCII码值为 H
如果(SP)=42H,(3FH)=12H,(40H)=34H,(41H)=50H,(42H)=80H,则执行下列指令后
如果(SP)=42H,(3FH)=12H,(40H)=34H,(41H)=50H,(42H)=80H,则执行下列指令后
设R0=42H,(42H)=80H,A=48H,(50H)=08H,指出下列程序...OV @R0,50HMOV 50H,A
设R0=42H,(42H)=80H,A=48H,(50H)=08H,指出下列程序...OV @R0,50HMOV 50H,A
已知程序执行前有(A)=02H,(SP)=42H,(41H)=FFH,(42H)=3FH。下述程序执行后,(A)=_______,(SP)=_______,(51H)=_______,(52H)=_______。
已知程序执行前有(A)=02H,(SP)=42H,(41H)=FFH,(42H)=3FH。下述程序执行后,(A)=_______,(SP)=_______,(51H)=_______,(52H)=_______。
有如下程序段:MOV31H,#24H;MOVA,31H;SWAPA;ANLA,#0F0H;执行结果是() A: B: =24H C: D: =42H E: F: =40H G: H: =00H
有如下程序段:MOV31H,#24H;MOVA,31H;SWAPA;ANLA,#0F0H;执行结果是() A: B: =24H C: D: =42H E: F: =40H G: H: =00H
已知:(40H)=11H,(41H)=22H,R0=40H和R1=41H,试问如下指令执行后累加器A, 40H,41H和42H单元中的内容是什么? MOV A, @R0 MOV @R1, A MOV 42H, @R1 A: A=22H,(40H)=41H,(41H)=11H,(42H)=11H B: A=11H,(40H)=11H,(41H)=11H,(42H)=11H
已知:(40H)=11H,(41H)=22H,R0=40H和R1=41H,试问如下指令执行后累加器A, 40H,41H和42H单元中的内容是什么? MOV A, @R0 MOV @R1, A MOV 42H, @R1 A: A=22H,(40H)=41H,(41H)=11H,(42H)=11H B: A=11H,(40H)=11H,(41H)=11H,(42H)=11H
中国大学MOOC: 如果(SP)=42H,(3FH)=12H,(40H)=34H,(41H)=50H,(42H)=80H,则执行下列指令后:POP DPHPOP DPLRET(PCH) =( )。
中国大学MOOC: 如果(SP)=42H,(3FH)=12H,(40H)=34H,(41H)=50H,(42H)=80H,则执行下列指令后:POP DPHPOP DPLRET(PCH) =( )。
从键盘输入6和B时,得到的ASCⅡ码分别是() A: 06 B: OBH C: 08 D: 15H E: 60 F: 11H G: 36 H: 42H
从键盘输入6和B时,得到的ASCⅡ码分别是() A: 06 B: OBH C: 08 D: 15H E: 60 F: 11H G: 36 H: 42H