BizJournals Portfolio
Sep 26 2007 12:00am EDT

The Hand-held Calculator Turns 40

Why, just tonight, at "back to school night" at my son's middle school. that wacky science teacher Mr. Jones held up this complicated-looking programmable graphing calculator and made some comment about how we -- us middle-aged parents -- didn't even have calculators when we were in middle school.

Yeah, well...

In fact, the hand-held calculator turns 40 this week. Four decades ago, Texas Instruments introduced the first one, the Cal-Tech. Priced at hundreds of dollars, I remember that they were a curiosity, not a tool. It was astounding that little lights could form numbers on a screen.

And now calculators are so cheap, they're handed out as giveaways.

ti%20calc.jpg. □


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