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Download QR code; Print/export ... the Little Professor is a common item on calculator collectors' lists. [8] In 1976, the Little Professor cost less than $20. More ...
Calculator, which includes the class: Graphing calculator; Scientific calculator; Programmable calculator; Accounting / Financial Calculator; Handheld game console; Portable media player; Portable data terminal; Handheld Smartphone, a class of mobile phone; Feature phone; Wearable computer; Single-board computer; Wireless sensor network ...
PowerToys Power Calculator Power Calculator was a more advanced graphical calculator application than the built-in Windows Calculator; it could evaluate more complex expressions, draw a Cartesian or polar graph of a function or convert units of measurements. Power Calculator could store and reuse pre-defined functions, of any arity.
TI has also developed a line of graphing calculators, the first being the TI-81, and most popular being the TI-83 Plus (with the TI-84 Plus being an updated equivalent). Many TI calculators are still sold without graphing capabilities. [73] The TI-30 has been replaced by the TI-30X IIS. Also, some financial calculators are for sale on the TI ...
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. [19] [20] 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 ...
The series was produced for 20 years in spite of several attempts to replace it, and was a forerunner of the HP 9800 and HP 250 series of desktop and business computers. At the end of 1968, Packard handed over the duties of CEO to Hewlett to become United States Deputy Secretary of Defense in the incoming Nixon administration. He resumed the ...
A Nexus 6, an Android smartphone, displaying the Main Page of the English Wikipedia. A smartphone, often simply called a phone, is a mobile device that combines the functionality of a traditional mobile phone with advanced computing capabilities.
A solar cell or photovoltaic cell (PV cell) is an electronic device that converts the energy of light directly into electricity by means of the photovoltaic effect. [1] It is a form of photoelectric cell, a device whose electrical characteristics (such as current, voltage, or resistance) vary when it is exposed to light.