There have been a couple of very big changes in calculators over the past couple decades. The TI-89, which became available in 1998, let you solve equations with your calculator (just like the TI ...

And to learn more about that particular calculator and others like it at what was then the cutting edge of technology, we turned to Rick Bensene, curator of the Old Calculator Web Museum.

This year, high school juniors and seniors will buy a $100 calculator that's older than they are. You remember the TI-83: the brick-sized graphing machine you likely covered in stickers and used ...

Paranoid accountants rejoice! You may now buy calculators with hidden, motion-activated cameras in them, saving low-def video to internally-housed SD cards. The idea looks goofy, but is well ...