CompTIA A+® Complete Deluxe Study Guide:Exams 220-701 (Essentials) and 220-702 (Practical Application)

3.1. Understanding Display Types and Settings

Most display systems work the same way. First, the computer sends a signal to a device called the video adapter—an expansion board installed in an expansion bus slot or the equivalent circuitry integrated into the motherboard—telling it to display a particular graphic or character. The adapter then renders the character for the display—that is, it converts the single instruction into several instructions that tell the display device how to draw the graphic—and sends the instructions to the display device. The primary differences after that are in the type of video adapter you are using (digital or analog) and the type of display (CRT, LCD, projector, etc.). We'll talk about some of these differences ...