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The calculator had a BASIC interpreter, MEMO function, a formula library. The built-in 8 kB memory could be expanded using the optional Casio RP-8 (8 kB) or RP-33 (32 kB) RAM expansion modules. An optional Casio FA-6 interface board provided a cassette tape recorder connector, a Centronics printer connector and an RS-232C port. The calculator ...
Also commonly available from many companies are small printers made specifically for calculators which tend to use cash register tape paper, ports and cables for connecting the calculators to a computer and/or another calculator, cassette recorders for recording programs and data, overhead projector displays, and connectors for auxiliary ...
Expensive Desk Calculator by Robert A. Wagner is thought to be computing's first interactive calculation program. [1] The software first ran on the TX-0 computer loaned to the Massachusetts Institute of Technology (MIT) by Lincoln Laboratory. It was ported to the PDP-1 donated to MIT in 1961 by Digital Equipment Corporation. [2]
The Best Calculators. Best Overall: Texas Instruments TI-84 Plus CE Graphing Calculator. ... The Do’s and Don’ts of Using Painter’s Tape. The Best Portable BBQ Grills for Cooking Anywhere.
HP 9805A, the least expensive model using the same chassis as the HP46 (scientific) and HP81 (business) pocket calculators. This was a Programmable Calculator and had plug-in personality modules. It was introduced in 1973. [7] HP 9815A/S, the HP 9815A was HP's third generation high end RPN desktop and was introduced in 1975. [8]
Mac OS calculator: Proprietary: macOS: Double (64 bit) Yes Yes Yes GNOME Calculator: GPL-3.0-or-later: Linux, BSDs, macOS: Arbitrary decimal Yes Yes Yes KCalc: GPL-2.0-or-later: Linux, BSDs, macOS: Arbitrary decimal Yes Yes Yes Windows Calculator: MIT: Windows: ≥32 decimal Yes Yes Yes WRPN Calculator: Public domain: Windows, Linux, macOS ...
2140 - The 2140 is a grey/gray 8 oz. desktop calculator with a LCD display that uses L1131 batteries. It also includes a Mark Up key, a PC touch key, selectable decimal and rounding switches and a backspace key. It has 4 key independent memory. [15] 6400 - The 6400 is a grey/gray and white 6.4 oz desktop calculator with a tilted LCD display. It ...
Typically a home computer would generate audio tones to encode data, that could be stored on audio tape through a direct connection to the recorder. Re-loading the data required re-winding the tape. The home computer would contain some circuit such as a phase-locked loop to convert audio tones back into digital data. Since consumer cassette ...
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