【判断题】原理图文件设计必须先装载元器件库,方可放置元器件
【简答题】阅读下列程序,写出执行程序后R3内容。 MOV R0 ,#01H CLR A MOV R2 ,#09H LOOP : ADD A,R0 INC R0 DJNZ R2 ,LOOP MOV R3,A HERE : SJMP HERE R3=
【简答题】设R0=20H,R1=25H,(20H)=80H,(21H)=90H,(22H)=A0H,(25H)=A0H,(26H)=6 FH,(27H)=76H,下列程序执行程序后,R1= H。CLR C MOV R2,#3LOOP: MOV A,@R0 ADDC A,@R1 MOV @R0,A INC R0 INC R1 DJNZ R2,LOOP JNC NEXT1 MOV @R0,#01H SJMP ...
【简答题】设R0=20H,R1=25H,(20H)=80H,(21H)=90H,(22H)=A0H,(25H)=A0H,(26H)=6 FH,(27H)=76H,下列程序执行程序后,A= H。CLR C MOV R2,#3LOOP: MOV A,@R0 ADDC A,@R1 MOV @R0,A INC R0 INC R1 DJNZ R2,LOOP JNC NEXT1 MOV @R0,#01H SJMP $...
【简答题】设R0=20H,R1=25H,(20H)=80H,(21H)=90H,(22H)=A0H,(25H)=A0H,(26H)=6 FH,(27H)=76H,下列程序执行程序后,R0= H。 CLR C MOV R2,#3LOOP: MOV A,@R0 ADDC A,@R1 MOV @R0,A INC R0 INC R1 DJNZ R2,LOOP JNC NEXT1 MOV @R0,#01H SJM...
【单选题】与带传动相比链传动具有 ( ) 的特点
【简答题】内存单元初始化内容为:(2000H:2A00H)~(2000H:2A02H)分别为0FH、0EH、0DH,(2000H:2A10H)~(2000H:2A12H)分别为09H、08H、07H。执行下列程序后,填写存储单元的内容: MOV AX,2000H MOV DS,AX MOV ES,AX MOV SI,2A10H MOV DI,2A00H CLD MOV CX,3 L:MOV AL,[...
【简答题】设 R0=20H , R1=25H ,( 20H ) =80H ,( 21H ) =90H ,( 22H ) =A0H ,( 25H ) =A0H ,( 26H ) =6FH ,( 27H ) =76H , 下列程序执行后 , 结果如何 ? CLR C MOV R2 , #3 LOOP : MOV A , @R0 ADDC A , @R1 MOV ...
【简答题】删除实体的快捷键是 ; 复制的快捷键是 ;
【简答题】阅读下列程序 MOV R0 ,#01H CLR A MOV R2 ,#09H LOOP : ADD A,R0 INC R0 DJNZ R2 ,LOOP MOV R3,A HERE : SJMP HERE 写出执行程序后R3内容。