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The HP 48 is a series of graphing calculators designed and produced by Hewlett-Packard from 1990 until 2003. [1] The series includes the HP 48S, HP 48SX, HP 48G, HP 48GX, and HP 48G+, the G models being expanded and improved versions of the S models.
Delivered in 1857, it was the first printing calculator sold. [ 17 ] [ 18 ] [ 19 ] In 1857 the British government ordered the next Scheutz's difference machine, which was built in 1859. [ 20 ] [ 21 ] It had the same basic construction as the previous one, weighing about 10 cwt (1,100 lb ; 510 kg ).
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] Is the first pocket calculator with a numeric range that covered 200 decades (more precise 199, ±10 ±99). [5]
He had introduced the printing press to Europe and created the technology to make printing with movable types finally efficient enough to facilitate the mass production of entire books. [ 16 ] Many book-lovers have commented on the high standards achieved in the production of the Gutenberg Bible, some describing it as one of the most beautiful ...
The three stages of computing the selling price are computing the total cost, computing the unit cost, and then adding a markup to generate a selling price (refer to Fig 1). Fig 1: Cost-plus pricing steps. Step 1: Calculating total cost. Total cost = fixed costs + variable costs
The Curta was conceived by Curt Herzstark in the 1930s in Vienna, Austria.By 1938, he had filed a key patent, covering his complemented stepped drum. [3] [4] This single drum replaced the multiple drums, typically around 10 or so, of contemporary calculators, and it enabled not only addition, but subtraction through nines complement math, essentially subtracting by adding.