Your Electronics Open Source

All people, I suppose, know and talk about Plasma television sets, but most of them have not any idea about their structure and their functioning principles.

STRUCTURE

In the below picture there is a PDP ( plasma display panel ) scheme :

A good exercise for a beginner is to implement a module that pretends a timer.
To do this we have used the following functions that already exist in C library:

delay() – suspends execution for interval [ milliseconds ] ( defined in DOS.H )
kbhit() – checks for currently available keystrokes ( defined in CONIO.H )
printf() - outputs a formattes message to video. (STDIO.H)
clrscr() – clears text mode window ( defined in CONIO.H )

Below there is the module code :