Relay Switch Circuit and Relay Switching Circuit With heater using |8051 microcontroller. |Keil C – AT89C51| Assembly Language|

A heater connected to 220V supply using relay. Write a program to operate the heater as the switch connected to P2.1 goes high and turn off the heater as switch goes low. 

Source code

ORG 00H

HEATER BIT P2.0

SWITCH BIT P1.2

HERE: MOV C ,SWITCH

MOV MOTOR, C

SJMP HERE

END

Result: