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
Skyles Electric Works Skyles Electric Works Skyles Electric Works was founded in California by Bob Skyles, a former Commodore engineer, to produce hardware add-ons for the Commodore PET. Like Apple Computer it began in a garage in Cupertino, but for most of the company's existence it was based in Mountain View. The first products from Skyles Electric Works were memory expansions and keyboards (the first PETs had calculator-style keys which were unsuited to touch-typing). The earliest software products were firmware, including the "Command-O" and "Disk-O-Pro", which enhanced the BASIC language of the PET. However the company also published cassette and disk-based software including