SWITCH INTERFACING WITH 8051

• MICROCONTROLLER – AT89S52 
• COMPILER – MIKROC
• SIMULATION – PROTEUS 8.1
• CRYSTAL – 4MHz

CIRCUIT

PROGRAM

/*
MICROCONTROLLER -AT89S51/52
COMPILER ---MIKROC
BY---EMERGING TECHNOLOGIES --WWW.EMERGINGTECHS.ORG
*/
void main()
{
    P2.f1=1;   //pull up
    while(1)
    {
        if( P2.f1==0)
        {
            P2.f0=0;
        }
        else
        {
            P2.f0=1;
        }
    }
}