TI-59 most keypresses for a single instruction

[rprosperi]

(12-21-2017 02:56 PM)Thomas Okken Wrote:  I'm aftraid not, we haven't been counting very accurately...

HP-41: XEQ ALPHA F C ? ALPHA Shift 0 0 Shift GTO Shift Σ+
13 keystrokes
HP-42S: Shift FLAGS FC? . 0 0 Shift GTO . IND 0 1
12 keystrokes

Compliments to Massimo for using Σ+ as a shortcut for 01. It's been so long since I've used a 41 I had completely forgotten about that!

But... If I have FC? assigned to an un-shifted key, say [TAN], then it's

HP-41: TAN Shift 0 0 Shift GTO Shift Σ+
8 keystrokes

and before anyone decries this a foul or cheating, recall that the entire point of key assignments was to reduce keystrokes, so if this were being done often (which almost certainly it isn't) the assignment would save 5 keystrokes every time.

As it seems this thread has devolved to which is more key-efficient, and the 58/59 series don't support non-program key assignments (he thinks...), I have to say the 41C wins again. YMMV.