hello, everyone !! i am new to the microcontroller. i am making a car using 8052 microcontroller. i want to call the interrupt to pass the values to other port and rotate the motor. i connect a wire from button to VCC and to the interrupt and other wire to the ground pin of the microcontroller. when i start the microcontroller and i push the button, it short the supply and does not call the interrupt. please help me !! and also help me making a logic invertor(NOT gate) using resistor, diode and transistor !!! thanks anyways