This document contains assembly language code that defines procedures to capture user input, display characters, and output strings to the screen. It initializes data segments, clears the screen, positions the cursor, gets a single character of input and stores it in a variable, displays a string, and exits the program. The code defines labels for procedures to clear the screen, position the cursor, display a character, get user input, and output a string. It calls these procedures to perform input, output, and display operations before terminating the program.

1. .model small
.386
.stack 64
.data
char db 00,"$"
CA1 LABEL BYTE
MAX1 DB 10
REAL1 DB ?
CAD1 DB 11 DUP ('$')
CA2 LABEL BYTE
MAX2 DB 10
REAL2 DB ?
CAD2 DB 11 DUP ('$')
.code
inicio proc far
mov ax,@data
mov ds,ax
call limpiar
MOV DX,0205H
call ubicar
MOV DL, '@'
call mostrarCaracteresAscii
call caracter
LEA DX,char ;CADE
call cadena
call capturar
LEA DX,char; CA1
call recibe
mov ax,4c00h
int 21h
inicio endp
;-------------------------------------------------recibe proc near
MOV AH,0AH
INT 21H
ret
recibe endp
;-------------------------------------------------cadena proc near
MOV AH,09H
INT 21H
ret
cadena endp
;-------------------------------------------------caracter proc near
MOV AH,02H
INT 21H
ret
caracter endp
;-------------------------------------------------capturar proc near
mov ax,10h
int 16h
ret
capturar endp
;--------------------------------------------------

2. limpiar proc near
MOV AX,0600H
MOV BH,71H
MOV CX,0000H
MOV DX,184FH
INT 10H
ret
limpiar endp
;-------------------------------------------------ubicar proc near
MOV AH,02H
MOV BH,00H
INT 10H
RET
ubicar endp
;-------------------------------------------------mostrarCaracteresAscii proc near
mov cx,256 ;
lea dx,char
d20:
mov ah,09h
int 21h
inc char
loop d20
ret
mostrarCaracteresAscii endp
end