alaaalkhfagi
Newbie level 3
hi interface 4*4 matrix keypad to the microcontroller by using 74c922 encoder but i cant figure out the loop require to scan key press and to hold the data "i am new to the microcontrollers"
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
In Maxim website DS2408 costs $2.75 @1k so basically $5 for two pieces and seems expensive.
For that money I can buy four ATMEGA8 use one AVR in each side and keep the other two for the next project!