Forum Home
Press F1
 
Thread ID: 69425 2006-06-01 01:38:00 pressing multiple keys headsh0ts (10484) Press F1
Post ID Timestamp Content User
459673 2006-06-01 01:38:00 Im having trouble pressing multiple keys at once on my keyboard (mainly for playing games).

Strangly it doesnt apply to every key combination, but mostly when 2 kwys are hed down, the 3rd doesnt register. Ive tried different keyboards and problem still occurs.

Any help would be greatly appreciated. Cant find the answer to the problem anywhere!
headsh0ts (10484)
459674 2006-06-01 06:37:00 What operating system is this? Under XP there are some accessibility tools, one being sticky keys and other key options. If you have XP, have a look under Control Panel > Accessibility and see if everything looks OK and does not prevent multiple keys being pushed.

Welcome to PressF1 as well. :)
Jen (38)
459675 2006-06-01 09:13:00 Thank you :) Amazing how long it took me to find a half decent pc help site!

Anyway, Im using XP, and ive tried turning on and off Sticky, Filter, and Toggle keys, but to no such luck.
headsh0ts (10484)
459676 2006-06-01 11:14:00 There could be a solution to the problem, because I just held down z+x and then pressed L several times with the following result: zxlllll .

Hit simultaneously, the z always comes first, but all other keys remain active thus: zxdfgherdfcv, except for AS, QW and 1&2 which are directly above and don't work at all . If I don't press a third key, the x simply repeats .

However, I am using W2K and a very old PC Direct din plug keyboard with proper cherry switches . One whack with this would kill a horse so that gives you an idea how old and solid it is, so I am wondering if more modern keyboards have less tolerant electronics?

I guess it is all to do with the matrixing of the key inputs .

Cheers

Billy 8-{)
Billy T (70)
459677 2006-06-01 12:44:00 Thanks mate, that was suprisingly helpful :)

It appears that keys dont work if 2 others nearby are held before them. For emaple, after holding hj, then yunm and k all wouldnt work, or sd makes qwexcf all not work. Bizarre.

Strangly though 4, 5, 7, and 8 and the keypad dont work if any 2 other keys are held before them.

At least i know what keys specificly dont work. Is this a common thing, or my keyboards just crap? Damn i hate wireless stuff. Aways goes wrong. :badpc:
headsh0ts (10484)
459678 2006-06-01 22:52:00 At least I know what keys specificly dont work. Is this a common thing, or my keyboards just crap? Damn i hate wireless stuff. Aways goes wrong. :badpc:
It is nothing to do with wireless, and everything to do with shared address lines in the keyboard matrix.

This page (computer.howstuffworks.com) might help clarify the situation, but essentially keyboards are a serial input device and broadly speaking only one alpha key can be active at a time, i.e. when typing, the keyboard outputs a serial data stream. Exceptions are the function keys and any other combinations commonly used to control additional features.

You may need to get the ends of your fingers sharpened into points to prevent them from striking more than one key at once. :D

Cheers

Billy 8-{)
Billy T (70)
1