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
Solar Electric Power Company Solar Electric Power Company Solar Electric Power Company is a manufacturer of solar lighting and remote solar power stations that utilize compact fluorescent lamps CFL, light emitting diodes LED, metal halide, induction, low pressure sodium, and high pressure sodium and is based in Stuart, Florida. Steve Robbins, the founder and president, designed and patented the first commercial solar street light. Single crystal solar panel are used in solar power assemblies which provide maximum efficiency in the smallest size available. The solar panel backs are covered by vented aluminum panel pans to protect against weather, vandalism, and other types of damage.