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HP's first scientific calculator, HP-35 With this in mind, HP built the HP 9100 desktop scientific calculator. This was a full-featured calculator that included not only standard "adding machine" functions but also powerful capabilities to handle floating-point numbers, trigonometric functions , logarithms, exponentiation, and square roots .
HP Basic: No 8-bit RPL character set [12] Buzzer HP SIR, 2×5-pin RS-232: 3×1.5 V (4.5 V) AAA: 1995 None HP 39G, HP 40G: HP-28S: 1 MHz Lewis (Saturn 1LT8 core) 32 KB RAM, not flashable 4-line (137×32 pixel) monochrome LCD Entry RPN: Dynamic: RPL: Rudimentary [8] 8-bit HP Roman 8 variant [13] [14] [15] Buzzer HP SIR: 3×1.5 V (4.5 V) N: 1988 ...
HP 9815A. Chronologically, the models of the family were: HP 9810A, a keystroke programmable computer with magnetic cards and LED display, introduced in 1971, [1]; HP 9820A, introduced in 1972, was the first HP model that deals with algebraic input (not only RPN) [2] featured a high level language simpler than BASIC that was later named high performance language (HPL),
The HP calculators Voyager series consisted of five models, some of which were manufactured in several variants (with years of production): HP-10C – basic scientific calculator (1982–1984). HP-11C – mid-range scientific calculator (1981–1989). HP-12C – business/financial calculator (1981–present).
The HP-35 was 5.8 inches (150 mm) long and 3.2 inches (81 mm) wide, said to have been designed to fit into one of William Hewlett's shirt pockets. Was the first scientific calculator to fly in space in 1973. [5] HP-35 calculators were carried on the Skylab 3 and Skylab 4 flights, between July 1973 and February 1974. [6]
The HP-16C Computer Scientist is a programmable pocket calculator that was produced by Hewlett-Packard between 1982 and 1989. It was specifically designed for use by computer programmers , to assist in debugging .
The calculator was code-named Wizard, [4] which is the first known use of a code name for a calculator. It also contained an Easter egg that allowed users to access a not-especially accurate stopwatch mode. [5] [6] An accurate version of the stopwatch mode was officially featured in the 1975 successor of the HP-45, the HP-55.
Like all Hewlett-Packard calculators of the era and most since, the HP-55 used Reverse Polish Notation (RPN) and a four-level automatic operand stack. Another feature of the HP-55 was that it officially featured a stop-watch function much similar to the hidden stop-watch function of the earlier HP-45 calculator. This stop-watch function could ...
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