HP-45
![]() The HP-45 | |
Type | scientific |
---|---|
Introduced | 1973 |
Discontinued | 1976 |
Calculator | |
Entry mode | RPN |
Display type | Seven-segment display |
Display size | 10 + 2 |
Programming | |
Programming language(s) | RPN key stroke |
Other |
The HP-45 was the second scientific pocket calculator introduced by Hewlett-Packard, adding to the features of the HP-35. It was introduced in 1973[1] with an MSRP of $395[2] (equivalent to $2,178 in 2017).[3] Especially noteworthy was its pioneering addition of a shift key that gave the other keys alternate functions.
The calculator was code-named Wizard,[4] which is the first known use of a code name for a calculator. It also contained an Easter egg that allowed users to access a not-especially accurate stopwatch mode. An accurate version of the stopwatch mode was officially featured in the 1975 successor of the HP-45, the HP-55.
Emulators
Several individuals and companies make software emulators of the HP 45 series calculators.
- Nonpareil, high-fidelity simulator for calculators
- Emulates, among other, the HP-45. Licensed under the GNU General Public License (GPL). Available for a large variety of operating systems.
- HP-45 Emulator
- HP-45 Emulator written in Java. Licensed under the GPL 3. Available for Android [5] and Symbian.[6]
- HP-45 Windows Phone 7 App
- An Emulator for Windows Phone 7.
- HP-45 Emulator in JavaScript
- The HP-45 Program ROM was translated to JavaScript to have an exact simulation of the original calculator for use in web browsers.
References
- ↑ "HP Virtual Museum: Hewlett-Packard-45 advanced scientific pocket calculator, 1973". Retrieved 2017-10-15.
- ↑ Free, John R. (April 1974). "Those incredible new scientific pocket calculators". Popular Science. p. 124. Retrieved 2017-10-15.
- ↑ Federal Reserve Bank of Minneapolis Community Development Project. "Consumer Price Index (estimate) 1800–". Federal Reserve Bank of Minneapolis. Retrieved January 2, 2018.
- ↑ HP Calculator History - The HP-45
- ↑
- ↑
Further reading
- https://www.google.com/patents/US3892958 Inverse/complementary function prefix key, patent US3892958A
External links
This article is issued from
Wikipedia.
The text is licensed under Creative Commons - Attribution - Sharealike.
Additional terms may apply for the media files.