What are the components of a computer graphics?

Answer 1

COMPONENTS OF COMPUTER GRAPHICS

Interactive computer Graphics consist of three components namely digital buffer, TV monitor and display controller. Using these components, we are able to see the output on the screen in form of pixels (picture elements). Following is the explanation of these components:-

1. Digital Memory Buffer:-This is a place where images and pictures are stored as an array (matrix of 0 & 1, 0 represents darkness and 1 represents image or picture). This is also called frame buffer. In today's term frame buffer is called V-RAM (video RAM) and it helps to store the image in bit form. It helps to increase the speed of graphics (sometimes we watch movies on our computer system and movie run slowly. System engineer is then called for. He comes and fits in V-RAM (in Mega bytes) into our system and movie runs perfectly.

2. TV Monitor: - Monitor helps us to view the display and they make use of CRT technology (Cathode ray Tube).

3. Display Controller:- It is an interface between Memory Buffer and TV Monitor. Its job is to pass the contents of frame buffer to the monitor. This passing has to be fast for steady display on the monitor (depending upon the material of the system). The image must be passed repeatedly to the monitor to maintain a steady picture on the screen. The display controller reads each successive byte of data from FB Memory and converts 0's and 1's into corresponding video signals. This signal is then feed to the TV monitor to produce a black and white picture on screen. In today's term, display controller is recognized as a display card and one of our choices can be VGA card with a resolution of 640x480.(Display Controller is also capable of displaying image in colors).

Several graphics systems are designed in this way:-

MONITOR

DISPLAY CONTROLLER

100…11

FB

110….11

FRAME BUFFER ( BIT PATTERN 0&1)