Program cassettes (2)


Date of production: probably 1970s

This picture shows compact cassettes storing computer-readable information (programs and data) encoded as audio signals. The cassettes in thes photograph bear the printed mark “Wang 700 Programmable Calculator Program Cassette” and various handwritten titles, including “Fourier-Synthese,” “Dataplot Fourieranalyse,” and “Regelkreissimulation” (“simulation of a control system”).


This photograph was taken by Nikita Braguinski at the Audio Communication Group, Technische Universität Berlin, in May 2018.

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Instruments and Technologies
Tape / tape recorder
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Academies and Societies