Last Sunday at the Azusa Swap Meet, I purchased the HP-28C and HP-48GX calculators for less than $10. What a lucky day. The batteries cost more than the calculators.
Since I do not have much time, here is some info on these beauties:
MOHPC Page - HP 28C/S
* Battery compartment was a struggle to open.
* Only 1,614 bytes of memory (net) on the 28C. More than the Casio fx-7000GA, but less than the Texas Instruments TI-81 (2,400 bytes).
* However, the 28C does come with algebraic and calculus commands. :)
MOHPC - HP 48 Page
* This will go in my collection of 48s: 48SX, 48G (dog chewed in a corner LOL), 49g+ (both bad and good keyboard), 50g
Pictures below.
Eddie
