Talk:Computer keyboard

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add information regarding keyboard ghosting[edit]

Mechanical Keyboards[edit]

If a random plebeian may cut in, I believe that this article is missing important information regarding the continued manufacture of mechanical key switches (the Cherry MX standard for instance), and their continued use among enthusiasts for their speed and feedback. Also worth mentioning would be the great value placed on the old buckling spring IBM keyboards by aforementioned enthusiasts. While this information is on the keyboard technology page, I believe these small references would still be useful on the main page. Thanks for your time. — Preceding unsigned comment added by (talk) 16:38, 7 February 2014 (UTC)

32-key computer keyboard and other variants[edit]

Here is 32-key variant:

 ; 0 1 2 3 4 5 6
7 8 9 A B C D E

You can remove the text using right-click menu. You use the missing letters using latin equalivement. — Preceding unsigned comment added by (talk) 19:01, 10 March 2014 (UTC)

Standard size keyboard[edit]

I have never heard of there being a agreed standard for key sizing and I can't find any credible source about standard size keyboard either. There had been some very popular keyboards in history (the IBM Model M comes to mind), but popularity alone doesn't make it a standard, else we would be calling the Ford Model T the standard size car. — Preceding unsigned comment added by (talk) 03:47, 10 March 2015 (UTC)

I can find very little information on this, even from otherwise excellent manufacturers such as logitech. The keyboard specs don't include the sizes and spacing of the keys, which is a critical factor in reducing keyboard fatigue IMO.

Some measurements of the overall length of the row QWERTYUIOP inclusive (but just the alpha keys, not the Tab and special character keys at the ends of the row):

  • Bauhn wireless USB combo (bought at ALDI as part of a mini-system package) 19cm
  • IBM multimedia (wired USB) keyboard 19cm
  • Logitech backlit keyboard+touchpad 18cm
  • HP subnotebook 17.5cm

I find the 19cm perfect but have no trouble with the 18cm either. But a good friend (with smaller hands... mine are quite large) finds the 18cm keyboard much easier to use.

Other measurements? Yes I know this is OR but it's good to get things right as well as sourced.

Even better, any RSs? Andrewa (talk) 00:22, 30 April 2016 (UTC)

See for some information... The reason for standardized keycap size, spacing and alignment is a simple one: not having a standard would make everyone who has to use more than one keyboard utterly miserable. Touch typists and data entry people learn the "feel" of a keyboard and become used to its spacing and the size of its keys. Moving between two keyboards with different-sized keys or keys with different spacings would slow people down. It would also cause major retraining problems for new employees, or if you bought a new PC, and so on. It says the standard is .75" centre to centre, see the diagram there. I guess that corresponds to 19cm above (but it's a little harder to measure accurately than the measurement I chose... it would mean 3" from the centre of the Q to the centre of the T, I might use that as the standard from now on).

Yep, the "standard" Q-T centre to centre of the Bauhn and IBM keyboards is 3", the Logitech is a little over 2 3/4".

But I have to disagree with the conclusion of the above ref... it's actually better to have a keyboard that fits your hands, on evidence to date. I think I'd like one a bit bigger in fact!

I wonder... I did my first serious typing on an IBM 026 keypunch, and then IBM 029s and DECWriter IIs. Wonder what their spacing was? Andrewa (talk) 03:21, 30 April 2016 (UTC)

In response to a question at the reference desk [1] I've now again measured the Q-T centre to centre of the Logitech... very close to 2 3/4", versus the standard 3". Andrewa (talk) 17:14, 1 May 2016 (UTC)

OR or...[edit]

The reference desk did well [2] ... I'll let the thread there go to archive in due course and permalink to it there (meantime the diff will have to do).

But how to progress this so as to get verifiable, sourced information for our article... I wonder, would Wikiversity be a suitable place? Andrewa (talk) 22:22, 5 May 2016 (UTC)

It looks promising, see v:Portal:Research.

Similarly, Wikipedia:Wikimedia sister projects#When to link reads in part Wikipedia encourages links from Wikipedia articles to pages on sister projects when such links are likely to be useful to our readers....

The problem is likely to be having a Wikiversity page accepted as a reliable source. That's not insurmountable:

  • It may be groundbreaking (or not), but publishing suitably reviewed material, both in journals and in the proceedings of seminars and conferences etc., is a standard part of a university, and seems within the scope of Wikiversity's aims etc..

Comments welcome of course! Andrewa (talk) 22:48, 5 May 2016 (UTC)

Scancodes as seen by the computer[edit]

Whether a computer sees all of the keydown and keyup operations of every key, or whether the keyboard processor makes substitutions based on modifier keys is important to know. This article does not provide the answer. The designer of an application may want to know whether he/she can use a non-modifier key as if it were a modifier key, and he may look at this page for an answer. FreeFlow99 (talk) 15:09, 4 December 2015 (UTC)

This is not as simple as it might seem. See scancode and rollover (key) for some more information. Andrewa (talk) 00:38, 26 May 2016 (UTC)