Talk:IBM Monochrome Display Adapter

From Wikipedia, the free encyclopedia
Jump to: navigation, search
WikiProject Computing  
WikiProject icon This article is within the scope of WikiProject Computing, a collaborative effort to improve the coverage of computers, computing, and information technology on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
 ???  This article has not yet received a rating on the project's quality scale.
 ???  This article has not yet received a rating on the project's importance scale.
 

Pin numbers[edit]

What pin numbers? Shown is the end of the connector without any numbering.

Pin 7 = Video?[edit]

What is the meaning of Pin 7 ('video')? I.E. What does this mean electrically? I understand the 'intensity' represents how bright the screen gets per pixel and ground is electrical ground and horizontal sync is used for making sure the pixels displayed line up the right way, but what is the 'meaning' of 'video' electrically?

I think this is the answer you're looking for: The video line carries a digital (on or off) signal indicating if the pixel was on or off. The intensity line made the pixel brighter than normal. There were three levels of pixel brightness - off, on, and on with intensity. The intensity signal just made the pixel brighter - if the video signal did not call for the monitor to paint the pixel on, the intensity signal had no significance.

In electronic parlance the name "video" on a signal line is often used to show that the line is carrying picture information - I've also seen laser printer circuit diagrams with the signal to the laser module named "video". 72.16.169.146 (talk) 19:42, 14 April 2008 (UTC)


Fair use rationale for Image:Executive-Suite-DOS-1982.png[edit]

Nuvola apps important.svg

Image:Executive-Suite-DOS-1982.png is being used on this article. I notice the image page specifies that the image is being used under fair use but there is no explanation or rationale as to why its use in this Wikipedia article constitutes fair use. In addition to the boilerplate fair use template, you must also write out on the image description page a specific explanation or rationale for why using this image in each article is consistent with fair use.

Please go to the image description page and edit it to include a fair use rationale. Using one of the templates at Wikipedia:Fair use rationale guideline is an easy way to insure that your image is in compliance with Wikipedia policy, but remember that you must complete the template. Do not simply insert a blank template on an image page.

If there is other fair use media, consider checking that you have specified the fair use rationale on the other images used on this page. Note that any fair use images uploaded after 4 May, 2006, and lacking such an explanation will be deleted one week after they have been uploaded, as described on criteria for speedy deletion. If you have any questions please ask them at the Media copyright questions page. Thank you.

BetacommandBot 03:52, 1 October 2007 (UTC)