0

Quick backstory:
I am looking at building a custom mechanical keyboard (custom case and firmware) I was looking around and found a site that gave me keycodes for javascript and it shows there are 32 function keys (https://keycode.info/). On an Apple keyboard, it comes with 19 function keys (at least for the one a relative has). I know a typical keyboard only has 12.

The question:
Is there a specification for the number of function keys that a keyboard should be able to support, and where can I find it?

Since support may be different on different machines, what is the max number of function keys that are supported on Windows, Mac OS, and Linux?

New contributor
nickq is a new contributor to this site. Take care in asking for clarification, commenting, and answering. Check out our Code of Conduct.
0

Many keyboards had F1 through F14, and some Macs through F16. The IBM 1397000 and others had F1 through F24. That said, I don't know of any keyboard with 32 function keys. Actually, function keys are defined through F35, on Unix X Window machines!

However, there are various ways to send keycodes for all the F-keys. For example, ISO/IEC 9995 specifies use of Shift for Level 2 keys and AltGr for Level 3. The VT100 terminal used a combination of Esc and Shift to send the keycodes. Some VT100 emulators used left and right shift keys for different F-key levels.

https://answers.yahoo.com/question/index?qid=20100223185531AA0MGzu

| improve this answer | |

Your Answer

nickq is a new contributor. Be nice, and check out our Code of Conduct.

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.