Open problem: optimal calculator keyboard layout based on key usage statistics
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05-28-2018, 01:27 PM
(This post was last modified: 05-28-2018 10:29 PM by emece67.)
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Open problem: optimal calculator keyboard layout based on key usage statistics
Hi all,
Motivated by some discussions about the key layout of the, maybe, future wp43s, I decided to measure the relative usage frequencies of the keys in a calculator. For that purpose, I modified the source code of the wp34s Qt emulator for it to keep a record, on disk, of the key usage. After a few days of not using any "real" machine, but only the emulator, I do have now some preliminary numbers. As I'm only interested in the basic layout of the machine (that is: number input plus basic ops, this translates to digits, decimal point, CHS, ENTER, EEX, 4 basic ops, backspace, SWAP, down stack & EXIT), I'll only show the numbers for such keys. They are (key: % usage)
Based upon this frequencies, what do you think will be an "optimal" keyboard layout, minimizing the finger flight time. Some rules to be obeyed:
Some other interesting data and open questions:
Thoughts and layout proposals? |
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