Toshiba LC-833wa Handheld Electronic Calculator

This handheld electronic calculator also serves as an alarm clock. It has an aluminum case with plastic trim and an array of twenty-five rectangular plastic keys. These include ten digit keys, a decimal point key, a total key, four arithmetic function keys, four memory keys, a square root key, a percentage key, a change sign key, a clear key, and a clear entry key. Above the keys are an on/off switch and a switch for setting the alarm. Behind this are six buttons that relate to setting the time. Behind this is an eight-digit liquid crystal display. Below the keys a mark reads: LIQUID CRYSTAL CALCULATOR LC-833WA (/) TOSHIBA.

A sticker on the back of the calculator reads: TOSHIBA ELECTRONIC CALCULATOR (/) LC-833WA (/) SILVER OXIDE BATTERY. It also reads: NO. D 57903 BM (/)TOKYO SHIBAURA ELECTRIC CO., LTD. JAPAN.

The calculator has a brown plastic case with a window that reveals the display. A mark on the case reads: TOSHIBA.

References:

According to the www.calcuseum.com website, accessed December 3, 2014, this calculator was in production in 1978. According to the www.datamath.org website, accessed December 3, 2014, this calculator was introduced in 1978.

[Advertisement], Los Angeles Times, November 24, 1979, p. D5. This ad shows the LC-840WA, which appears to be a slightly later model.

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