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128/48 KB of RAM (24 KB user accessible), 2 MB of Flash ROM (1.5 MB user accessible) 96×64 pixels 16×8 characters 7.5 × 3.3 × 0.9: No 2004 129.99 Allowed Allowed TI-84 Plus C Silver Edition: Zilog Z80 @ 15 MHz 128 KB of RAM (21 KB user accessible), 4 MB of Flash ROM (3.5 MB user accessible) 320×240 pixels 26×10 characters (large font)
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 .
Olivetti Divisumma 18, Museo Nazionale della Scienza e della Tecnologia "Leonardo da Vinci", Milan. The Divisumma 18 was an electronic printing business calculator manufactured by Olivetti in 1972 and designed by Milanese architect Mario Bellini. [1] [2] It was selected for its collection by the Museum of Modern Art in New York. [3]
The TI-84 Plus C Silver Edition was released in 2013 as the first Z80-based Texas Instruments graphing calculator with a color screen.It had a 320×240-pixel full-color screen, a modified version of the TI-84 Plus's 2.55MP operating system, a removable 1200 mAh rechargeable lithium-ion battery, and keystroke compatibility with existing math and programming tools. [6]
The first scientific calculator that included all of the basic ideas above was the programmable Hewlett-Packard HP-9100A, [5] released in 1968, though the Wang LOCI-2 and the Mathatronics Mathatron [6] had some features later identified with scientific calculator designs.
The user has a solver (another HP first) available, but only had about 1.5 KB of continuous memory available to store equations. The calculator has many functions buried in a menu structure. The clamshell design is fairly robust, but the battery door is the shortcoming of this whole line; 18C, 19B, and 28C/S models .