Hewlett Packard is bringing back the HP15C. I was heard to go “Squeeee!” when I read that. At least one of my coworkers will testify to that.
(Bringing back the 16C would be even more cool, though I think everything the 16C did is built into the 50g.)
(Hattip: His Grubes.)
Edited to add: Well, that took me down a rabbit hole. Following the museum link to the HP41C (my first HP) reminded me of the good old days of synthetic programming and the legendary PPC ROM. Googling that turned up this profile of Richard J. Nelson, the man behind the PPC ROM. I was unfamiliar with his modulator/demodulator project, which made me sit up and go “Wow.” (The 41 series of calculators had an optical wand which could be used to read bar coded programs into the calculator. Mr. Nelson came up with a box on one end that the wand plugged into, which converted the bar codes into audio tones that could be recorded to tape or sent over a phone line. On the other end was another box that took the tones as input and controlled an LED, which the wand could read like a bar code. I know that doesn’t sound like a big deal to you kids today, but I find it pretty stunning for late 70s/early 80s technology. Also, get off my lawn.)