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File:SinclairExecutive-01.jpg

Description Sinclair Executive calculator.

Clever design of its electronics to reduce the power consumption allowed the use of button cells for the first time in a hand-held calculator, and gave a very thin design which was remarkable for the time.

Photograph taken by myself of a calculator in my collection.
Date 2007-05-28 (original upload date)
Source Originally from en.wikipedia; description page is/was here.
Author Original uploader was MaltaGC at en.wikipedia
Permission
( Reusing this file)

Licensed under the GFDL by the author; Released under the GNU Free Documentation License.

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MaltaGC at the English language Wikipedia, the copyright holder of this work, hereby publishes it under the following license:
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GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.

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