Digital clock using atmega328 IC

       My idea was to create a simple digital clock. As I was familiar with Arduino microcontroller programming, I chose arduino uno for my project. I wanted my digital clock to look like a product. So, I cannot use my arduino uno board as it was big and needed plenty of jumper cables for connections. But I decided to use only the microcontroller chip which is atmega328. I found on the internet that atmega328 IC can be used like the arduino uno with a couple of capacitors and a crystal oscillator. Stage – 1: Preparing block diagram and circuit diagram      The block diagram consists of the atmega328 microcontroller. For that, a start button, a reset button, hour setting button and minute setting button are connected as input. All these buttons are 4-pin pushbuttons. And an LED, a 4-digit 7-segment display is used as output.       As I was going to use atmega328 microcontroller, I had to figure out the pin configuration of that IC. A...