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programming / alt.lang.asm / PS/2 vs USB Keyboard and why Logitech K120 belongs in trash !

SubjectAuthor
* PS/2 vs USB Keyboard and why Logitech K120 belongs in trash !skybuck2000
+- Re: PS/2 vs USB Keyboard and why Logitech K120 belongs in trash !Kerr-Mudd,John
`- Re: PS/2 vs USB Keyboard and why Logitech K120 belongs in trash !skybuck2000

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Subject: PS/2 vs USB Keyboard and why Logitech K120 belongs in trash !
From: skybuck2...@hotmail.com
Newsgroups: alt.lang.asm
Date: Wed, 4 Dec 2019 14:56 UTC
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Subject: PS/2 vs USB Keyboard and why Logitech K120 belongs in trash !
From: skybuck2...@hotmail.com
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Hello,

In this video I prove why PS/2 keyboards are better for typing and gaming.

https://youtu.be/fQxe7MXUYOo

In short:
PS/2 drivers are optimized and use less CPU cycles and thus will remain responsive in HEAVY CPU GAMING USAGE.

Logitech K120 USB Keyboard has BAD drivers and TINY annoying shift key on the left, the rest is also a few millimeters off causing QUESTION MARK to be pressed while trying to hold RIGHT shift key.

(Unfortunately I smashed it to pieces before I could test the BAD drivers like shown in this video, however I used another USB keyboard, Logitech UltraX it has much better drivers but even here it shows the USB drivers consume more CPU cycles ! Therefore I advise gamers to use PS/2 connections for keyboards when available, to keep keyboard responsive during HIGH CPU usage during gaming, especially for World of Warships ! ;) :))

I completely smashed this shit out of Logitech K120 and put it in the trash where it belongs =D

It was 12 euros. Worst 12 euros ever spent ! LOL. Shame on Logitech for producing this garbage. I am very glad this keyboard is now DEAD, so I did have some fun smashing the shit out of this 12 euro costing piece of SHIT.

This video shows:

1. LiteOn PS/2 Keyboard in white, using less cpu cycles (less black lines on screen).
2. Logitech UltraX USB keyboard, using more cpu cyces (more black lines). This keyboard has better drives than the Logitech K120 presumably, but still perhaps worse than PS/2.
3. Logitech K120 keyboard in trash where it belongs ! =D
4. Tiny annoying shift key on Logitech K120 keyboard.

Worse 12 euro's ever spent on hardware.

This keyboard lasted about 6 months or 1 year or something before I totally smashed it to pieces, couldn't stand it anymore.

This is the first piece of hardware that I completely smashed to pieces as far as I can remember ! LOL.

That says something about the horror of this product ! ;) =D

Bye,
  Skybuck.


Subject: Re: PS/2 vs USB Keyboard and why Logitech K120 belongs in trash !
From: Kerr-Mudd,John
Newsgroups: alt.lang.asm
Organization: dis
Date: Wed, 4 Dec 2019 15:08 UTC
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From: notsay...@invalid.org (Kerr-Mudd,John)
Newsgroups: alt.lang.asm
Subject: Re: PS/2 vs USB Keyboard and why Logitech K120 belongs in trash !
Date: Wed, 4 Dec 2019 15:08:05 -0000 (UTC)
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On Wed, 04 Dec 2019 14:56:50 GMT, skybuck2000@hotmail.com wrote:

Hello,

In this video I prove why PS/2 keyboards are better for typing and
gaming.

You appear to have posted a hardware issue in an assembly NG.
Please try to focus.


--
Bah, and indeed, Humbug.


Subject: Re: PS/2 vs USB Keyboard and why Logitech K120 belongs in trash !
From: skybuck2...@hotmail.com
Newsgroups: alt.lang.asm
Date: Wed, 4 Dec 2019 16:55 UTC
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Subject: Re: PS/2 vs USB Keyboard and why Logitech K120 belongs in trash !
From: skybuck2...@hotmail.com
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Part 2 (shorter video 3 mins and 30 secs and looks at visualizations only, on both cores, since driver might run on different core):

Better analysis of PS/2 vs USB Keyboard, USB mouse show too (on dual core system).

https://youtu.be/Tv6e75GBfHI

Each pixel roughly represents one microsecond of time or so. Each black pixel shows something else consuming CPU, which in this case would mean USB drivers. It's possible that driver runs on different core, so both cores visualize.

Each visualization runs on it's own core.

It seems the PS/2 keyboard runs more consistent and consumes slightly less time than USB keyboard.

USB mouse uses a lot of CPU.

Bye,
  Skybuck.


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