mov dl, OutputChar ;character to display
mov ah, 02h ;Display Character
int 21h
Display Character (Function 02h) displays a character on the standard output device.
This function has been superseded by Write File or Device (Function 40h).
OutputChar
Specifies the ASCII value of the character to be displayed.
This function has no return value.
When the standard output device is the screen, displaying a backspace character (ASCII 08h) moves the cursor back one position but does not erase characters.
Function 40h Write File or Device