Ever since Casio introduced personal sized products with the Casio Mini, the company has quickly followed up with ever-smaller versions, from “handy,” to “pocket,” to “card” sizes, making electronic calculators smaller, thinner, and lighter.

Then in November 1983, Casio released its credit card sized calculator (85mm x 54mm x 0.8mm, 12g), finally realizing the ultimate in a thin, lightweight, compact product. Remarkably, the SL-800 Film Card calculator was a mere 0.07% the weight, and 0.008% the volume, of Casio°s first electronic calculator, the 001.

These figures alone reveal how much technical innovation had taken place between the ages of the two products. The electronic film technology used to create the SL-800 contributed to the increased miniaturization and advancement of Casio products, while also forming a base to establish one of the world’ s most cutting-edge electronic device businesses.

Information from www.casio-calculator.com

Manufacturer: Casio
Date: 1983

This exhibit has a reference ID of CH73953. Please quote this reference ID in any communication with the Centre for Computing History.

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