Thursday, October 21, 2021

Used Graphing Calculators

 Most of the time, I bid and buy used calculators from www.shopgoodwill.com.  I have had great luck overall.  Full disclosure: This is as close as I get to gambling. I bid on calculators which work. Once in a while, a calculator doesn’t work.  I save it and cannibalize it for parts, such as the battery cover.  Avoid calculators with a black smudge or spot.  The spot can mean there is damage to the LCD screen.  Look at several of the images on the bidding site: the image may have a shadow, not a spot on the screen.

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