Rivendell Cinetron
Launched in late 1976, the Rivendell Cinetron shows the clever adaption of a Sinclair Oxford 100 hand-held calculator mounted on a box with extra electronics to provide digital frame/time counter and calculator functions for use with sound synchronisation in cine film making.
Photograph inside showing, on the right, the green underside of the circuit board of the Sinclair Oxford 100 hand-held calculator mounted on the front of the box and the extra components.
There is more information about this calculator and more photographs of it on the associated site at http://vintagecalculators.com/html/rivendell_cinetron.html
Sinclair models
Vintage British Calculators
Text & photographs copyright, except where stated otherwise, © Nigel Tout 2000-2025.