数据段定义如下:BUFF DB 2 DUP(?)执行下面的指令,在键盘输入2个数字:1,2后,BUFF存储单元存储的内容是多少?LEA DI,BUFFMOV CX,2LOP1: MOV AH,1INT 21HMOV [DI],ALINC DI LOOP LOP1
A: 31H,30H
B: 30H,31H
C: 32H,31H
D: 31H,32H
A: 31H,30H
B: 30H,31H
C: 32H,31H
D: 31H,32H
举一反三
- 已知:(30H)=23H,(31H)=13H,(40H)=72H,(41H)=08H 执行: MOV A,30H ADD A,40H DA A MOV 30H,A MOV A,31H ADDC A,41H DA A MOV 31H,A 则结果为:(30H)=______H,(31H)=______H,(40H)=______H,(CY)=______。
- BAS DB 11,22,33,44,55 NUM DB 10,20,30,40,50 IN DB 1,2,3 代码段定义如下: MOV BX,OFFSET BAS LEA SI,IN MOV DI,4 MOV AX,[SI+2] ;(AX)=【1】H XCHG AX,[SI] ;(AX)=【2】H MOV AX,4[BX] ;(AX)=【3】H MOV AX,[BX][DI] ;(AX)=【4】H
- 写出下列程序段执行后AX的值为多少? MOV AX, 1234H; AX=(1)H MOV CL, 4 AND AL, 0FH; AX= (2) H ADD AL, 30H; AX= (3)H SHL AH, CL; AX= (4)H AND AH, 0F3H; AX= (5)H
- 阅读下面程序段: MOV DL,0 MOV CX,8 MOV BL,100AGA: MOV AL,30H SHR BL,1 JNC NEXT MOV AL,31H NEXT: RCL DL,1 MOV AH,0EH INT 10H LOOP AGA执行本程序后DL=_______H;屏幕上显示内容为_______。(注:答案和答案之间用一个空格分开。)
- 墙、柱的高厚比验算应满足____。 A: β=H0/h≤μ1μ2[β] B: β=H/h≤μ1/μ2[β] C: β=H0/h≥μ1μ2[β] D: β=H/h≥μ1/μ2[β]