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
The Lancashire Electric Power Company The Lancashire Electric Power Company The Lancashire Electric Power Company was one of the largest private electricity companies in the UK. It was established by Act of Parliament in 1900. Its original power station was the Radcliffe Power Station which was opened by the Earl of Derby on 9 October 1905. This had two 1,500 kW turbo sets manufactured by British Thomson-Houston, generated at 10 kV (the first power station in the UK to transmit by bare electric conductors at 10kV). The first customer was the Acme Spinning Company in Pendlebury which with 75,000 spindles was the first cotton spinning