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[Official] Mechanical Keyboard Guide - Page 504

post #5031 of 14567
Quote:
Originally Posted by ljason8eg View Post
I got the impression from my email conversation with them that they're more than welcome to hand them out as long as you meet the requirements (scan of student ID card).

Since I ordered mine I've told two people I know personally and they both placed orders as well. So I helped with 2 more sales
so you needa scan the id card?

ok i will do that now lol
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post #5032 of 14567
Quote:
Originally Posted by Manyak View Post

PS/2 or USB?
PS/2 wins on three fronts: First, it supports full n-key rollover. Second, PS/2 keyboards aren't polled, but are completely interrupt based. And third, it is impossible for it to be delayed by the USB bus being used by other devices. There are two types of USB transfer modes - the interrupt transfer mode (USB polls keyboard, when key is sensed the USB controller sends the interrupt to the CPU), and the isochronous transfer mode, which reserves a certain amount of bandwidth for the keyboard with a guaranteed latency on the bus. Unfortunately, there are absolutely no keyboards made that use the latter, because special controllers would have to be used, thus making it cost prohibitive.
Does this really matter? I think PS/2 keyboards are being phased out. I had a look at the new keyboards for sale and all of them are usb based. The only PS2 keyboards are leftovers. In the future it's going to be hard to find a PS2 keyboard if you still want one.
post #5033 of 14567
Quote:
Originally Posted by Popple View Post
Does this really matter? I think PS/2 keyboards are being phased out. I had a look at the new keyboards for sale and all of them are usb based. The only PS2 keyboards are leftovers. In the future it's going to be hard to find a PS2 keyboard if you still want one.
Any mechanical keyboard with full NKRO has a USB/PS/2 adapter included. The cord coming from the keyboard is still USB, you just use the adapter to get the additional benefit of PS/2.

99% of the new keyboards are cheap rubber dome boards too. Doesn't mean they're any good.
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post #5034 of 14567
Quote:
Originally Posted by Popple View Post
Does this really matter? I think PS/2 keyboards are being phased out. I had a look at the new keyboards for sale and all of them are usb based. The only PS2 keyboards are leftovers. In the future it's going to be hard to find a PS2 keyboard if you still want one.
Currently, every mechanical keyboard that features full NKRO (full N-Key Rollover) requires the use of the included USB to PS/2 adapter. Without that adapter, it's limited to the current USB spec of 6 simultaneous keypresses plus 4 modifiers such as Shift or Ctrl.

So, when we're discussing the use of PS/2, we are usually referring to mechanical keyboards that feature full NKRO; but not always.

If you're wondering what full NKRO is, then it's this: full NKRO would be incorrectly advertised today as "full Anti-Ghosting across the entire keyboard". This means that with full NKRO, all 104 keys can be pressed at the same time, and all 104 will be sent and will register. Without full NKRO, the majority of those keypresses would be blocked.

But there are many mechanical keyboards that don't have full NKRO but yet they still come with a USB to PS/2 adapter for those who want to enjoy the advantages of PS/2.

So yes, it most certainly matters.
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post #5035 of 14567
Quote:
Originally Posted by TwoCables View Post

So, when we're discussing the use of PS/2, we are usually referring to mechanical keyboards that feature full NKRO; but not always.
I thought it meant for all keyboards. My mistake.
post #5036 of 14567
Quote:
Originally Posted by Popple View Post
I thought it meant for all keyboards. My mistake.
It still is technically better on any board that supports it for the simple fact that it gets around the USB polling rate.
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post #5037 of 14567
Quote:
Originally Posted by Popple View Post
I thought it meant for all keyboards. My mistake.
Well, I suppose it can include rubber dome keyboards too. After, all, the advantages of PS/2 aren't limited to just mechanical keyboards. But it's tough to include rubber dome boards since PS/2 rubber dome keyboards are being phased out. Well, they're at least harder to find at popular stores like Best Buy.

But perhaps someday we'll have a new interface that will replace USB and have all the benefits of PS/2 without being considered to be "old technology". If this happens, then I hope it plugs in just as securely as USB.
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CoolingOSMonitorKeyboard
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Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
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post #5038 of 14567
The real question is whether anyone really needs more than 6KRO... Hell, it's rare that I bump into problems with well designed 2KRO...
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post #5039 of 14567
Thread Starter 
Quote:
Originally Posted by ch_123 View Post
The real question is whether anyone really needs more than 6KRO... Hell, it's rare that I bump into problems with well designed 2KRO...
If once...just once...you play a console emulator or an old dos game where you have two people playing on a keyboard, you can run into trouble with 6-KRO.

And on 2-KRO it's easy to run into trouble finding the right keys for even one player on those things. It took me like 10 tries to configure ZSNES on my laptop, lol.
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post #5040 of 14567
Quote:
Originally Posted by Manyak View Post
If once...just once...you play a console emulator or an old dos game where you have two people playing on a keyboard, you can run into trouble with 6-KRO.

And on 2-KRO it's easy to run into trouble finding the right keys for even one player on those things. It took me like 10 tries to configure ZSNES on my laptop, lol.
I hit a wall with 6-KRO on THPS, but it's only when I'm doing something that needs the most commands lol. That game you use both hands on the keyboard.
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