Learn about the technologies behind the Internet with The TCP/IP Guide!
NOTE: Using robot software to mass-download the site degrades the server and is prohibited. See here for more.
Find The PC Guide helpful? Please consider a donation to The PC Guide Tip Jar. Visa/MC/Paypal accepted.
View over 750 of my fine art photos any time for free at DesktopScenes.com!

[ The PC Guide | Systems and Components Reference Guide | Video Cards | Video Display Standards ]

Monochrome Display Adapter (MDA)

The first video cards used in the earliest machines conformed to the MDA standard, established by IBM as part of the original PC. MDA is a monochrome-only, text-only standard, allowing text display at 80x25 characters. Each character is made up of a matrix that is 9 dots wide by 14 dots high, yielding an effective resolution of 720x350 at a refresh rate of 50 Hz (of course it is text-only so these dots are not individually addressable).

Obviously, MDA is beyond obsolete. However, at the time it was a good solution for the limited capabilities of the original PC.

Next: Hercules Graphics Card

Home  -  Search  -  Topics  -  Up

The PC Guide (http://www.PCGuide.com)
Site Version: 2.2.0 - Version Date: April 17, 2001
Copyright 1997-2004 Charles M. Kozierok. All Rights Reserved.

Not responsible for any loss resulting from the use of this site.
Please read the Site Guide before using this material.
Custom Search