Getting started with 7 segment module
What is a segment display? and Why to use MAX7219 display module? Suppose you have made a counting device or measuring device. The output of the device is a number. It can be displayed on your mobile display, computer display or any display but the most basic one is the seven segment display that's because using only seven led's (each for one segment) you get to display all the numbers from 0 to 9. Less bits more data that's what every display designer aims for and that's the reason why the seven segment is still used along with microcontrollers because it's the most efficient way to display numbers. You can directly interface the 7 segment display to microcontroller but it will take 8 pins just for one display. Now, what if you have to display 3 digit number then you may need 8x3 pins, that's 24 pins just for displaying 3 digits, not good. To solve this issue there are two ways:- 1. Multiplexing - Switching on and off the individual display one after the oth...