Timeline for How do I remove the limit on PC keyboard button presses?
Current License: CC BY-SA 3.0
16 events
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| Jun 30, 2023 at 12:12 | comment | added | Corsaka | @Mussri With the advent of HID, this only applies to BIOS-level keyboard use. Assuming your keyboard has enough circuit isolation, you can press as many keys as you want. | |
| Sep 18, 2019 at 16:11 | comment | added | JMac | @Mussri The limitation can be overcome with modern USB keyboards. Mine supports NKRO, but it may have something to do with using 2 USB ports. | |
| Apr 20, 2019 at 0:59 | comment | added | Mussri | It's surprising and interesting that that's a limitation of USB as used by modern keyboards. Why, though? | |
| S Sep 3, 2015 at 1:24 | history | suggested | chicks | CC BY-SA 3.0 |
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| Sep 3, 2015 at 0:48 | review | Suggested edits | |||
| S Sep 3, 2015 at 1:24 | |||||
| May 7, 2013 at 16:06 | review | Suggested edits | |||
| May 7, 2013 at 16:23 | |||||
| Jun 5, 2012 at 22:26 | comment | added | BlueRaja - Danny Pflughoeft | @Raven: Also, MS and logitech sometimes market keyboards as "anti-ghosting." This is a marketing term for "better than 2KRO," though often it just means 3KRO. Again, check the keyboard specs (either on the box, or on amazon/newegg) to find out the exact rollover. | |
| Jun 5, 2012 at 22:23 | comment | added | BlueRaja - Danny Pflughoeft | @Raven: The term you're looking for is called "Rollover". Most cheaper keyboards are 2KRO (2-key rollover), meaning any two keys can be held down at once and still be detected (though most of them have 3- or 4-key rollover for most of the common key-combinations for games, like keys near W-A-S-D). The maximum possible through USB is 6KRO. Through PS/2 port there is no limit; keyboards which support any number of simultaneous keypresses are called NKRO (n-key rollover). Check the specs when buying a keyboard to find out its rollover. | |
| Mar 7, 2011 at 17:08 | comment | added | Joey | Notably, Das Keyboard allows 6 keys simultaneously on USB and any number of them on PS/2. | |
| Sep 25, 2010 at 21:14 | comment | added | GnomeSlice | Raven > This may sound juvenile, but if you're physically purchasing your keyboard(s) at a store, as opposed to buying online, you could always ask to try it out on a PC, and see how many keys you can press at once. That's what I usually do, and most retailers won't mind. If the retailer doesn't have a computer handy, you could bring a laptop. | |
| Sep 1, 2010 at 8:08 | comment | added | Neil Aitken | Mechanical switch keyboards usually allow multiple presses but can be rather expensive | |
| Sep 1, 2010 at 0:30 | vote | accept | Christian | ||
| Aug 31, 2010 at 23:59 | comment | added | Raven Dreamer | Any suggestions on how to identify this when purchasing keyboards? | |
| Aug 31, 2010 at 23:47 | history | edited | Invader Skoodge | CC BY-SA 2.5 |
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| Aug 31, 2010 at 23:43 | comment | added | JavadocMD | This is a common limitation of laptop keyboards, especially. | |
| Aug 31, 2010 at 23:41 | history | answered | Invader Skoodge | CC BY-SA 2.5 |