1. Video Card CES Industries, Inc. Lesson 10

2.  Translates computer information of binary digital data into visual information that the monitor can understand.  The video card and monitor must support the same video standards. Video Card CES Industries, Inc.

3. Video Memory - RAM used to store video information. 1. Video Memory - RAM used to store video information. 2. BIOS extension ROM - contains software to change the information stored in the video memory to information that can be displayed on the monitor. Common Characteristics CES Industries, Inc.

4. 3. Video Output Connector - 9 or 15-pin connector that supplies necessary signals to drive the monitor. 4.Microcontroller - control logic that is responsible for the independent operation of the video card. 5. Digital to Analog Converter (Optional) - present in video cards that utilize VGA (video graphics array). Common Characteristics CES Industries, Inc.

5. Video Display standards CES Industries, Inc.

6.  Original IBM video system  Displayed text in one color  Video card contained 16K of memory  80 columns and 25 rows  No graphics capability  Digital signaling Monochrome Data Adapter (MDA) CES Industries, Inc.

7.  First video adapter to display graphics  16 shades of gray  Card contained 32K of memory  80 columns and 24 rows  Digital signaling Hercules Monochrome Data Adapter (HMDA) CES Industries, Inc.

8.  First video adapter to provide color  Pixel - picture element or one dot of light on the monitor screen.  16 colors at 320 x 200 pixels  Video card had 64K of memory  Digital signaling Color Graphics Adapter (CGA) CES Industries, Inc.

9.  Increased resolution to 640 x 350  Limited color display to 16 colors  First adapter to switch from digital to analog Enhanced Graphics Adapter (EGA) CES Industries, Inc.

10.  All analog signaling  640 x 480 with 256 colors  Super VGA (SVGA) 1024 x 768 pixels with 16.7 million colors. Cards contain 1 MB+ memory.  XGA or PGA (Extended or Professional Graphics Adapter).  S3 or Accelerator - special version of VGA increases speed of video. Video Graphics Array (VGA) CES Industries, Inc.

11.  Small foot print  Very energy efficient  Good image quality  All solid state construction, no cathode ray tube.  Lightweight  Analog and Digital interfaces available  EXPENSIVE  Support XGA and PGA Graphic modes Flat Screen Monitors CES Industries, Inc.