08-09-2018, 11:58 PM

As a confirmed calcaholic, I've been trying to limit myself to just these, in this order:

1. HP LED - any, all, multiples (successful!)

2. HP LCD - the "more interesting ones" (RPN, RPL - partially successful!)

3. Other LED programmables - but not TI (see below)

4. Other LED scientifics - particularly, but not exclusively, RPN

5. Other interesting LEDs (like Heath 1401 - 3x of those!)

6. TI programmables (58, 59...)

Had to share my latest find - in category 3 - a PERFECT, AS NEW Litronix 2290 LED Programmable! This beauty has a large LED display, with "digit for DP" like the HP Classics, square root (divide/+ !!), one memory - and - 10 KEYSTROKE PROGRAMMABILITY!! Almost useless! But SO beautiful!!!

1. HP LED - any, all, multiples (successful!)

2. HP LCD - the "more interesting ones" (RPN, RPL - partially successful!)

3. Other LED programmables - but not TI (see below)

4. Other LED scientifics - particularly, but not exclusively, RPN

5. Other interesting LEDs (like Heath 1401 - 3x of those!)

6. TI programmables (58, 59...)

Had to share my latest find - in category 3 - a PERFECT, AS NEW Litronix 2290 LED Programmable! This beauty has a large LED display, with "digit for DP" like the HP Classics, square root (divide/+ !!), one memory - and - 10 KEYSTROKE PROGRAMMABILITY!! Almost useless! But SO beautiful!!!