Updated 24 May, 2013, 7:53 pm IST
Gaming keyboards demystified
| by Nachiket Mhatre
Rollover, ghosting, and keyblocking
If you have heard enough gaming keyboard spiel from manufacturers, you probably have come across jargon such as anti-ghosting, key rollover and key blocking. Key blocking is the tendency of the keyboard to refrain from registering any input when multiple keys are held down simultaneously. The key rollover figure is closely related to this phenomenon. You will generally see it advertised as X-key rollover, where X is the number of keys that can be pressed simultaneously before key blocking occurs.
It is of utmost importance to gamers because certain types of games such as stealth-based FPS (sneaker shooters) require multiple modifiers for crouching, running, leaning and zooming being held down even as you press more keys. Therefore, a keyboard with 6-key rollover will let you hold down a lot more keys than one with 2-key rollover (4KRO), while also allowing you to use the WASD cluster as usual. Although some PS/2 keyboards let you hold any number of keys down (NKRO: n-key rollover), certain USB gaming keyboards also boast of that capability. However, it's very rare that one would require any more than 6KRO.
Ghosting occurs when you press two or more keys and the keyboard mistakenly register an extra key that wasn't pressed at all. This is caused by keyboard design that determines key input by shorting entire rows and columns of the keyboard matrix. Fortunately, this issue is no longer observed in modern keyboards. Among these parameters, rollover is the only one that deserves to be considered then. At any rate, you can test your keyboard's rollover and ghosting capability with this handy tool.
N-key rollover makes a gread deal of difference in stealth FPS games
Backlighting comes in handy for noctural gaming sessions
Tags: gaming keyboard , keyboards , gaming keyboard guide , keyboard guide , gaming keyboard india , gaming keyboard price , keyboard price india , how to choose gaming keyboard , best gaming keyboard
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