Minimal Key Calculator

[Eddie W. Shore]

(03-13-2015 10:20 AM)BartDB Wrote:  

(03-13-2015 08:17 AM)Gerald H Wrote:  In another thread the question of unnecessary functions & redundant keys is raised:

http://www.hpmuseum.org/forum/thread-3345.html

What could be the least number of keys needed to reproduce all the functions of, say, the HP 35S keyboard?

If you were happy with a purely binary calculator, only two number keys would be required - but probably you would want to keep decimal input, so let's say you stay decimal.

Not the least number of keys, but what I'd be comfortable using without too many shifts & menu's. Small form factor with 23 keys:



http://pickyb.blogspot.co.uk/2014/05/pro...kcalc.html

Best regards.

I would love to have this scientific calculator.