Except for that rabid gang of early adopters, most of us hold back on purchasing new technology; it's only going to get cheaper (not to mention less buggy). If you need an example of this, take a peek at the Sharp LC-8 advertised here. One of the first wave of transistorized electronic calculators in the late 1960s and early 1970s, the LC-8 was an exciting advance in handheld technology.

At $345 (roughly equivalent to $1800 today), the LC8's price was out of reach of many consumers. But that was a comparative bargain compared to the crop advertised above, in 1969. In 2008 dollars, the prices range from approximately $2200 to $7200.

With the advantage of hindsight, too, we know that things were going to get much, much smaller than the three-pound "space age baby" advertised in 1970.

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On the other hand, those of us who grew up in the 70s will never forget the first time a deep-pocketed relative with one of the new "pocket" calculators typed in the number 07734 and made us look at it upside down. hELLO!! Yeah, kiddies, that was hundreds of dollars of fun right there.