Casio Data Bank Calculator Watch
Hewlett-Packard may have invented the calculator watch, but Casio took it to the next level. In addition to performing basic calculations, the Casio Data Bank line added a bunch of extra storage (though minuscule by today’s specs) for storing information about birthdays, important meetings, and phone numbers for your closest friends, family, and co-workers. Everything had to be entered on a tiny fingerprint-friendly keyboard, and the Casio Data Bank introduced the now iconic (?) “bent” watch design as the screen and keyboard both grew in size.
