Casio (1s, 10s, 100s, etc ... ) had nine keys. Another distinguishing innovation was the use of a single display window instead of the three display windows (one for each argument and one for the answer) used in other calculators. Casio Computer Co., Ltd. was formed in June 1957. That year, Casio released the Model 14-A, sold for 485,000 yen, the world's first all-electric compact calculator, which was based on relay technology. In the 1980s, its budget electronic instruments and its line of affordable home electronic musical keyboard instruments became popular. The company also became well known for the wide variety
Telsen Electric Company Ltd Today, the Aston factory, now The Telsen Centre, has been converted by Midlands Industrial Association Ltd, a registered friendly society to provide Managed Workspace for New Start and small business SME's and managed and let by Prince Warnes Properties. www.prince-warnes.com Telsen Electric Company Ltd Telsen Electric Company was a British electronics company formed in Birmingham in 1924 by Mr. A. Macnamara at 207 Aston Road. In 1930 they moved to 56 Miller Street and shortly after moved to their new factory at the corner of Philips Street and Thomas Street. Incorporated in 1933, the Telsen Electric Company Ltd were manufacturers