Calculator to the development of electronic calculators. The Casio Computer Company, in Japan, released the Model "14-A" calculator in 1957, which was the world's first all-electric (relatively) compact calculator. It did not use electronic logic but was based on relay technology, and was built into a desk. In October 1961, the world's first "all-electronic desktop" calculator, the British Bell Punch/Sumlock Comptometer ANITA (A New Inspiration To Arithmetic/Accounting) was announced. This machine used vacuum tubes, cold-cathode tubes and Dekatrons in its circuits, with 12 cold-cathode "Nixie" tubes for its display. Two models were displayed, the Mk VII for continental Europe and the
Ultra Electronics Ultra Electronics Ultra Electronics Holdings () is a British company serving the defence, security, transport and energy industries. It is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index. The Company was started by Teddy Rosen in 1920 as "Edward E. Rosen & Co." manufacturing high quality headphones. In 1923 the company moved to new premises at Harrow Road, London and in 1925 a new company "Ultra Electric Ltd." was formed. Ultra introduced its first mains powered wireless set in 1931. After further expansion the company moved to larger premises at Erskine Road, Chalk