Semi-homework related question: How to make Ti-83 plus say "mem cleared" without actually clearing all program/app memory?

That hunk was Texas Instruments' TI-83 Plus. So far as I could understand it, the "Plus" meant that it had a few extra megabytes of RAM; why you needed loads of RAM in a graphing calculator, I had ...

My first graphing calculator, a TI-83 Plus, which was the standard at the time, cost my parents $100 over 15 years ago. Guess what?

A quick trip around the menus would soon show you that almost everything is where you’d expect from using a TI-84 Plus Silver Edition. You can still do math, statistics, graphing, and programming.