51–60 of 274 posts
Earlier quoted context omitted.
I wouldn't be surprised if the Apple keyboard is the fastest just because it has very shallow keys.
Sounds like a good argument for the superiority of shallow keys. I've always liked Apple keyboards - actually used their wired USB keyboard for a long time specifically because it felt like typing on a Powerbook.
Isn't a big part of the reason "gaming" keyboards cost so much because they can register more than three keys (sometimes four) being hit at the same time - something many cheaper keyboards cannot do due to the way they are wired?
It is a result of the matrix wiring of the keys, though more expensive keyboards will have them wired individually, mitigating this issue.
Earlier quoted context omitted.
I've gotten a FTDI down to 2 ms RTT, so if done right (using isochronous transfer) you can get USB down to 1 or max 2 ms. Looking at the latencies quoted here and in the article it's certainly not the problem. Notice that just getting a thread scheduled every 2 ms is already impossible for Windows, certainly one running a game. You'll get a bunch of outliers within the second. So even if you got your keyboard down to…
>So even if you got your keyboard down to 5 ms, great, but you are not running an operating system that can reliably do something within that timespan! Maybe I'm not understanding, but that doesn't seem correct. Most people (gamers) are running mice at 500/1000Hz polling rates and you can easily verify the movement made in each 1-2ms update. (And it is most definitely a noticeable difference going from a standard 125…
Earlier quoted context omitted.
Saying that PS/2 boards are "scanned" is inaccurate, as they trigger an interrupt immediately on a keypress.
Doesn’t the micro controller in the keyboard still scan, and then send a ps/2 signal?
You pressing the key triggers a wave of electricity cross the keyboard which is converted into the PS2 waveform, and pumped out at the same rate of the incoming clock waveform.
OLD PS2 keyboards don't generally have internal digital micro-controllers, they're effectively analog, the logic they do contain is blindly simple. This is why some struggle with N-Key Rollover.
---
OFC this is if you are using an -old- PS2 keyboard. I'm still using an 80's IBM Model M and above it roughly how it works.
Earlier quoted context omitted.
the article specifically states the reasons for why he messured the whole travel, no guesswork needed > This is because, as a human, you don’t activate the switch, you press the key. A measurement that starts from switch activiation time misses this large component to latency.
That's effectively providing a definition of the latency he's discussing, not an explanation of why that's the sort of latency he finds interesting. But I see he does goes on to say that he cares about game performance, rather than typing experience: « If, for example, you’re playing a game and start dodging when you see something happen, you have pay the cost of the key movement, which is different for different key…
In tacticale switches the bump and the making of the contact are mechanically connected.
Using the moment of finger/key contact quite obviously selects for travel, among other things.
Has anyone benchmarked the keyboard latency of recent generations MacBook Pro Retinas?
Earlier quoted context omitted.
I wouldn't be surprised if the Apple keyboard is the fastest just because it has very shallow keys.
That's fine though. It's about the experience end-to-end. I love the apple keyboards. I still type faster on them than other keyboards, including high-end mechanical keyboards. The short keys and actuation feel responsive, yet I've never felt like I've accidentally triggered a key.
Truth be told, I also prefer scissor switch keyboards, but there aren't any on the market that support the features I'd like: - configurable keys & layers on a hardware level - 60% layout - NKRO
Apple's magic keyboard would be great if it supported configuration/NKRO and didn't cost so outrageously much.