Texas Instruments Handheld Spell Checker
You have to really go out of your way to misspell a word when nearly every device with a keyboard can not only spot and fix spelling mistakes but also suggest improvements to your grammar. That wasn’t always the case, and in the late ‘80s spelling mistakes were only thwarted with either a graduate degree in English or a handheld device that looked like a calculator with letters. This marvel from Texas Instruments did its best to suggest the correct way to spell a word based on the text you entered, but users had to figure out which suggestion was the correct spelling all on their own. For $15 it’s the grammar equivalent of teaching someone to fish instead of just giving them a fish.
