Vintage British Calculators

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W.H. Smith Strand Memory

Strand Memory

Decimo Strand Memory for W.H. Smith

3v (2x AA batteries).

Display is 8 digits, green vacuum fluorescent.

4 functions, %, memory, square root.

Integrated circuit: NEC uPD278C.

78 x 136 x 26 mm. (3" x 5.4" x 1").

Made in Japan.

The label on the rear says "Supplied exclusively to W.H. Smith by Decimo".
W.H. Smith is a British chain of newsagent, book, stationery, and music stores.

Note that this model is identical except labelling to the Decimo Strand Memory version.

Strand Memory circuit board

The circuit board with NEC uPD278C calculator integrated circuit on the left and the vacuum-fluorescent display (VFD) in a single tube on the right.

Vintage British Calculators

Text & photographs copyright, except where stated otherwise, © Nigel Tout 2000-2024.