0-9999 seconds count down timer using PIC12F683 microcontroller
![](https://embedded-lab.com/blog/wp-content/uploads/2012/07/TimerCktSetup.jpg)
The goal of this project is to construct a simple 0-9999 seconds count down timer with an alarm and a display. The time is set through two tact switches and the count down seconds are displayed on a 4-digit seven segment LED display. The project uses PIC12F683 microcontroller for all I/O and timing operations and MAX7219 IC for driving the seven segment LED module. The time out condition is indicated by an audible alarm from a buzzer.