Alphabet Soup Prefix Conundrum

[rprosperi]

(03-17-2017 05:59 PM)Matt Agajanian Wrote:  So, since this was so problematic, why did they design the HP-34C with such an overwhelming layout with the three prefix key scheme?

How else would they get so many functions onto a keyboard that size?

The 67 and 34C are the only machines with 3 different color shift keys (the 65 has 3 colored shift keys but 2 are the same color), and therefore the busiest keyboards, but there is no other way to cram that number of functions onto keyboards of those sizes.