Handheld Calculators -- Comparison, Then and Now
Hand held electronic pocket calculators shrank dramatically in size and price from the 1970's, when they were first introduced, to the 1990's.
Shown on the left is a Kings Point SR-44 pocket calculator from about 1974. It used an LED display and measures 7 inches by 3-1/2 inches and originally sold for over $120.
On the right is a LCD based calculator from 1996. It measures 3-3/4 by 2-1/4 inches and sold for $2.99.
(SR stands for "slide rule" series)
(LED stands for "Light Emitting Diode")
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