Assembly Reading Keyboard Input

To read a keyboard input, here's a code to do it:

MOV AH,08    ; Function to read a char from keyboard

INT 21h      ; the char saved in AL

MOV AH,02    ; Function to display a char  

MOV DL,AL    ; Copy a saved char in AL to DL to output it

INT 21h

MOV AH,4Ch   ; Function to exit

MOV AL,00    ; Return 00

INT 21h

Assembly Reading Keyboard Input