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HP-65 in original hard case with manuals, software "Standard Pac" of magnetic cards, soft leather case, and charger The HP-65 is the first magnetic card-programmable handheld calculator. Introduced by Hewlett-Packard in 1974 at an MSRP of $795 [ 1 ] (equivalent to $5,069 in 2024) [ 2 ] , it featured nine storage registers and room for 100 ...
The operation and performance of the EL-8 are identical to its predecessor calculators, the QT-8D and QT-8B, because its logic circuits use the same set of four Rockwell-manufactured large-scale integrated circuits. [1] [2] [8] Likewise, its keyboard has the same layout, including the combined ×÷ key, [1] [2] and it also uses magnetic reed ...
The Master Library Module shown removed from its socket in the back of the calculator. Magnetic card storage folio also shown. The TI-59 and TI-58 were the first hand-held calculators to utilize removable ROM program modules. The Master Library Module ROM was included with the TI-59 and TI-58, and contains several useful pre-programmed routines ...
The calculator had a four-register stack (x, y, z and t). The stack was represented in the operating manuals with the t register at the top, followed by the registers z, y, and x. The "enter" key pushed the displayed value (x) up the stack. Any binary operation popped the bottom two registers and pushed the result.
Since it lacked expandability, and lacked any real I/O ability, both key features of the HP-41 series, it was marketed as an HP-15C replacement. The 42S, however, has a much smaller form factor than the 41, and features many more built-in functions, such as a matrix editor, complex number support, an equation solver , user-defined menus, and ...
The HP-22S is an electronic calculator from the Hewlett-Packard company which is algebraic and scientific. This calculator is comparable to the HP-32S. A solver was included instead of programming. It had the same constraints as the 32S, lacking enough RAM for serious use. Functions available include TVM and unit conversions.
The HP-12C is a financial calculator made by Hewlett-Packard (HP) and its successor HP Inc. as part of the HP Voyager series, introduced in 1981.It is HP's longest and best-selling product and is considered the de facto standard among financial professionals.
Sine is selected with the combination of the key followed by the + key. The (down) and (up) arrow keys are function select keys. The four operation keys (−, +, ÷ and ×) all have two other functions, activated by using one of the arrow keys. The functions available are sine, arcsine, cosine, arccosine, tangent, arctangent, logarithm and ...
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