what is the basic way of using leds as display from its matrix?

what is the way of using leds as a display and how a specific leds are lighted in matrix 

rickharris5 years ago
In a 2D matrix as illustrated below any horizontal line is made positive and the appropriate vertical line negative to light individual LEDs
avinash reddy (author) 5 years ago
Ok sir but can u give me an idea how to program this for display using pic16f88