Push Buttons or Switches are digital inputs and are widely used in electronic projects as most systems need to respond to user commands or sensors. Reading a switch is very useful because a switch is widely used and can also represent a wide range of digital devices in real world like limit sensors, level switches, proximity switches, keypads (a combination of switches) etc. Connecting a switch to a microcontroller is straight forward, all we need is a pull-up or pull-down resistor. In this article we are going to learn how to use MikroC Pro for PIC to read the status of a switch.