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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]
32 KB of RAM (24 KB user accessible), 512 KB of Flash ROM (160 KB user accessible) 96×64 pixels 16×8 characters 7.3 × 3.5 × 1.0 [4] No 1999 104.99 Allowed Allowed TI-83 Plus Silver Edition: Zilog Z80 @ 6 MHz/15 MHz (Dual Speed) 128 KB of RAM (24 KB user accessible), 2 MB of Flash ROM (1.5 MB user accessible) 96×64 pixels 16×8 characters
The HP-18C is HP's first RPL-based calculator internally, [1] even though this was not visible on user-level in this non user-programmable model. 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.
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 .
The name derives from ELektronen KAlkulator, and it weighed around 8 kg (18 lb). It is the first calculator in the world which includes the square root function. Later that same year were released the ELKA 22 (with a luminescent display) [22] [24] [25] and the ELKA 25, with an built-in printer.
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]