DATAMATH CALCULATOR MUSEUM
Longines Symphonette Electronic Calculator Version 1
|Date of introduction:||1972||Display technology:||LED modules|
|New price:||Display size:||8|
|Size:|| 5.5" x 3.0" x 1.7"
139 x 76 x 42 mm3
|Weight:||11.4 ounces, 322 grams||Serial No:||D1000-20495|
|Batteries:||6*AA NiCd||Date of manufacture:||year 1973|
|AC-Adapter:||unknown||Origin of manufacture:||USA|
|Program steps:||Courtesy of:||Frank Boehm|
We expect that about 18,000 Longines Symphonette Version 1 calculator were sold in the olive-green housing.
All Version 1 models with serial numbers above D1000-18000 use
the standard housing known from the Texas Instruments Datamath calculator.
This Longines Symphonette with one of the highest reported serial numbers (D1000-20495) looks very familiar to us.
Fellow collector Kai-Uwe Rommel reported in October 2015 serial number D1000-21646...
Dismantling this late Longines Symphonette Version 1 calculators reveals an expected manufacturing date of February 1973. Texas Instruments introduced the Datamath Version 2 in February this year, too.
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© Joerg Woerner, March 6, 2004. No reprints without written permission.