汇编 十进制转换16进制 十进制 转换2进制 十进制的数是键盘输入的，不一定是一位的

汇编

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1.输入两位10进制转换为16进制输出
data segment
data ends
code segment
assume cs:code,ds:data
start:mov ax,data
mov ds,ax
mov al,0
mov ah,01h
int 21h
mov bh,al
mov ah,01h
int 21h
mov bl,al
mov ax,0
sub bh,30h
mov al,bh
mov cl,0ah
mul cl
sub bl,30h
add al,bl
mov dl,al

mov bl,10h
mov cl,al
mov dl,0
l1:cmp cl,bl
jnae l2
inc dl
sub cl,bl
jmp l1
l2:add dl,30h
mov ah,02h
int 21h

cmp cl,0ah
jae l3
mov dl,cl
add dl,30h
mov ah,02h
int 21h
jmp e
l3: mov dl,cl
add dl,37h
mov ah,02h
int 21h
e: mov ah,4ch
int 21h
code ends
end start
2． 10转2
data segment
output1 db 'input the decimal number:$'
output2 db 'the binary number is:$'
data ends

code segment
assume cs:code,ds:data
main proc far
start:
mov ax,data
mov ds,ax
mov dx,offset output1
mov ah,09h
int 21h
call crlf
input:
mov ah,01h
int 21h
cmp al,30h
jb input
cmp al,39h
jae input
mov bl,al

lea dx,output2
mov ah,09h
int 21h
call crlf
mov cx,4
m1: test bl,8h
jnz m2
mov dl,'0'
mov ah,02h
int 21h
jmp m3
m2: mov dl,'1'
mov ah,02h
int 21h
m3: shl bx,1
loop m1

mov ah,4ch
int 21h
ret
main endp

crlf proc near
mov dl,0dh
mov ah,02h
int 21h
mov dl,0ah
mov ah,02h
int 21h
ret
crlf endp

code ends
end start

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