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
Calculator watch appointments, names, addresses, and phone numbers. Mass-produced calculator watches appeared in the early 1980s, with the most being produced in the middle of the decade, The future of the calculator watch as a practical and useful electronic device has been impacted by the introduction of PDAs, mobile phones, and other powerful multi-functional compact computing devices. As a result, many calculator watches are used for aesthetic purposes. Calculator watch A calculator watch is a digital watch with a built in calculator, usually including buttons on the watch face. Calculator watches were first introduced in the 1970s and continue to be produced,