These type of combinations may not be an issue to most users but some gamers and users of software that utilize numerous 3 key stroke combinations may have this issue.Įngineers optimize the circuitry so that the most common combinations will work, but the inherent drawback with the designs is that there will be combinations that just won't work. In this case, when pressing the above combinations of keys, the third key(R), will not register.
"Ghosting is when you press two keys on the keyboard, and a 3rd key - which you didn't press - gets sent to the PC as well. Note: Although this is how the term anti-ghosting is usually used, ghostingon a keyboard actually refers to something else. In some ways, you can think of anti-ghosting as an attempt by manufacturers to improve functionality of cheaply made rubber dome keyboards, without having to implement proper n-key rollover functionality.
The main thing to point out is that anti-ghosting usually implies that there is a limit on which combinations of keys and how many of them can be pressed simultaneously, while n-key rollover keyboards have no such limit (except when using USB, see 'PS/2 vs USB Technical Limitations' below).The number of simultaneously recognized key presses varies between each model of keyboard that does not have full n-key rollover. Anti-Ghosting - This can refer to the ability of a keyboard to recognize 3 or more key presses at once.N-Key Rollover - The press of each key on a keyboard can be detected individually, which means that each key you press will be seen by your operating system no matter how many keys you are holding down simultaneously (hence the variable 'n' in n-key to refer to as many keys as are possible to press on a keyboard).I liked it because it saves me space in my tiny desk where I can barely 3/4 of a keyboard and the trackball side by side, also has numpad and a large enter key unlike most of the English keyboard layouts.įor the Wireless could be the Logitech K800īut I'm not sure because I don't like its keys, layout, and the fact that it could make my game experience even worst.N-key rollover, often referred to as NKRO for short, is a term that is known and appreciated by many gaming enthusiasts but may not be as widely known as another term, anti-ghosting. Oh I want to mention that I normally use an Logitech M570 wireless trackball that uses a unified receiver and I have had a pretty good experience with it in games but I'm not sure if I use it with other devices like the KB could detriment is performance and end up with problems in both sides. So I have three options, buy a gaming keyboard, buy an wireless keyboard (which I'm afraid could be worst), or keep using old and trusty PS/2 Keyboards from the last century. Now normally I connected it in a front USB panel because my pc is used most of the time as HTPC and I need as much length as I can so I tried using the Mouse and KB dedicated USB ports, and kept having the same problem. With certain key combinations, you can end with a virtually stuck key, and can only be solved by hitting repeatedly a lot of keys at the same time.īut the interesting thing is that I've never had any of these problems with my old PS/2 KBs, which normally were used bundled keyboards from office PCs from the end of the last century that I took from my depot. Lost keystrokes so fighting and racing games become a nightmare and also in the after mentioned situation. High delay in CPU intensive applications like console emulation. So I went to buy a USB keyboard for the first time, so I bought an Logitech Media Keyboard K200, thinking it was going to be enough for my light gaming, and anyhting else.īut I was wrong, This has been the worst KB I've ever had. A few months ago my last old ps/2 keyboard started having problems with some keys so I thought that I should stop using old decade keyboards.