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RFT 75 |
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RFT 75 Distinctive features: One of a series of models manufactured in the communist GDR (East Germany). Batteries recharged by inserting the calculator in the charging unit. Technical details: 4-function. 4.8v (4x rechargeable button cells). Main integrated circuit - Texas Instruments TMS 0105NC, here dated 1973. 81 x 139 x 34 mm (3.2" x 5.5" x 1.3"). ~1973. Made by The calculator batteries are recharged by plugging the calculator into the docking station. |
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This calculator is from the middle of the period of the "Cold War" before the fall of the Berlin wall and the reunification of Eastern and Western Germany. During the decades of separation between communist eastern Europe and the west, development of components often took different paths, as shown by the rechargeable cells which look very
strange to us in the west. The binding of the wiring with cord is not something that was cost effective in a capitalist economy, but this feature of high-quality industrial wiring has been used in this product of a command economy. The use of a docking unit seems a very logical and neat idea, yet they were very rarely used. The Advance 88 is another example, but the docking unit is much cruder. |
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Vintage Calculators |
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© Text & photographs copyright Nigel Tout 2000-2012 except where noted otherwise. |
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