Towa Sankiden V-001

Date of introduction:  ca. 1979 Display technology:  LCD
New price:   Display size:  8
Size:  4.2" x 3.3" x 0.11"
 129 x 94 x 6.5 mm3
Weight:  1.6 ounces, 59 grams Serial No:  060251
Batteries:  n.a. Date of manufacture:  year 1979
AC-Adapter:   Origin of manufacture:  Japan
Precision:  8 Integrated circuits:  NEC uPD1831G 
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

The Solar Power Calculator V-001 was introduced already in 1979 by Towa Sankiden of Japan and and is one of the earliest calculators using solar cells instead of batteries. Don't miss the TEAL Photon and Triumph-Adler SOLAR MINI.

Dismantling this V-001 manufactured in 1979 in Japan reveals a very clean design centered around the NEC uPD1831G single-chip calculator circuit.

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Joerg Woerner, January 1, 2018. No reprints without written permission.