Quickalc

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A nice, quick, 100% offline calculator with complete keyboard supportJust an easy to use calculator which does not require a connection.
Also, it is open-source and you can find its code on GitHub.

==== FEATURES ====
* all the basic operations
* supports big numbers
* a memory register
* full keyboard support (see below)
* copy / paste the shown number
* resizable and fully responsive
* remembers the size and position

==== KEYBOARD SHORTCUTS ====
* 0-9 Numbers
* . Decimal
* +, -, *, / Operators
* =, return, space Equals
* C, DEL Clear all / Clear
* % Percent
* I +/-
* S Square root
* ^ x^2
* R 1/x
* P PI
* M Memory recall
* N Memory clear
* K Memory sum
* J Memory subtract
* CTRL+C / CMD+C Copy
* CTRL+V / CMD+V Paste

==== CHANGELOG ====
1.2.2
- Added DEL as keyboard shortcut for AC/C
1.2.1
- 100% offline
1.2.0
- Complete keyboard shortcuts
1.1.0
- Implemented BigNumber.js
1.0.0
- Public version