汇编-or逻辑或

 

[有一个是1就是1]

 

实例：

 

assume cs:codesg,ds:datasg
datasg segment
  db 'BaSiC'
  db 'iNforMaTion'
datasg ends

codesg segment
    start:mov ax,datasg
          mov ds,ax
          mov bx,0
          mov cx,5
        s:mov al,[bx]
          and al,11011111b;转换成大写
          mov [bx],al
          inc bx
          loop s
          
          mov cx,11
          
       s1:mov al,[bx]
          or  al,00100000b;转换成小写
          mov [bx],al
          inc bx
          loop s1
          
          
          mov ax,4c00h 
          int 21h

codesg ends
end start