Calculator for example, solve quadratic equations symbolically. The first graphing calculator was the Casio fx-7000G released in 1985. The two leading manufacturers, HP and TI, released increasingly feature-laden calculators during the 1980s and 1990s. At the turn of the millennium, the line between a graphing calculator and a handheld computer was not always clear, as some very advanced calculators such as the TI-89, the Voyage 200 and HP-49G could differentiate and integrate functions, solve differential equations, run word processing and PIM software, and connect by wire or IR to other calculators/computers. The HP 12c financial calculator is still produced. It was
Sumlock ANITA calculator £50,000 GBP but to be competitive with mechanical calculators the target selling price of the electronic calculator was in the range £350 to £400. The first all-electronic prototype was demonstrated to the board of the company in December 1958. This prototype was later donated by the company to the Science Museum in London, where Kitz had originally had the idea for the electronic calculator. It has been on display surrounded by the mechanical calculators that it was to make obsolete. There then followed several years of great effort in finding electronic and mechanical components suitable for production, testing them for