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HP 15c

is a simple emulation of the legendary HP 15 C Calculator from Hewlett Packard on the Desktop. The input of  UPN-Logic calculations are faster than the conventional way with the equals sign ( see  Wikipedia).

It is possible to operate the calculator with the mouse and the numerical keypad. It can be moved free on the desktop. 
With turning the mouse wheel the size of the calculator can be changed.
All function can be controlled by the keyboard. The white characters close to function key shows the key to be pressed.. 

The complex operations and the matrix operations are not yet implemented.
Also it is not possible to program the calculator.


Download...     Version 1.0.35 (1362 kB)

The free version has no restrictions, so you can test the version before buying. The "About" Message will not been shown anymore with a registrated version.



Get registrated user.
You can easily use Paypal (used for Ebay Payments) for payment. So we get no information about your credit card.
Ask for discount if you want to buy more registrations.
All further updates are free and no more About at startup is shown. You will be informed about further updates, if you wish this.

If you have any questions, send an E-Mail to ThGSoft Sales.  

Single Place Version
(registrated for 1 user for a reasonable number of computers)

20.00 sFr.

15.00 €
20.00 $


Version 1.0.35(Oct 17) Fixed               FormatSettings  not initialized
Changed        HP15c in Toolbar
Version 1.0.34(Oct 17) Copy Paste  :  "12.456_" -> "12.456"
Ctrl V and Ctrl C
Reset GUI

Version 1.0.33 (Oct 14) >H , >HMS,  Fehler
Lock Scroll Wheel, Improvment
Version 1.0.32 (Sep 12) Leave Program with Key 'q'
Version 1.0.31 (April 11) Bug in ->H
Version 1.0.30 (April 11) Small Changements
Version 1.0.29 (April 11) Click under Windows7
Version 1.0.28 (June 10) Bug in ->P
Version 1.0.27 (May 10) Sound Changed, Bug in ->H
Version 1.0.26 (Mar 10) Bug in ->H fixed
Version 1.0.25 (Mar 10) Desktop Icon  Behaviour
Version 1.0.24 (Feb 10) Stack Error
Version 1.0.23 (Jan 10) Function keys accessable by keyboard
Version 1.0.22 (Jan 10) LastX Stack Error
Version 1.0.21 (Dec 09) Conversion Error
Version 1.0.20 (Oct 09) Sizeing of HP15c with mouse wheel
Version 1.0.19 (Jul 09) About Screen for 96 DPI
Version 1.0.18 (Jun 09) Input of (g)Pi
Version 1.0.17 (Apr 09) Rounding Problem
Version 1.0.16 (Apr 09) Stack Error
Version 1.0.15 (Apr 09) Bug Divide by Zero for value less than 1e-12, new 1e-199
Version 1.0.14 (Mar 09) Bug in Pi, and e^x
Version 1.0.13 (Mar 09) Key 'e' will be intrepreted as EXP, Key Space will be interpretet as CHS
Version 1.0.12 (Mar 09) Enter and  "*,+,-,/" according Original
Version 1.0.11 (Nov 08) Bug in ->H
Version 1.0.10 (Nov 08) Bug in ->H
Version 1.0.8 (Sep 08) Minor Update
Version 1.0.7 (Jul 08) Fix Format displayed as 1'234.45
Version 1.0.6(Jun 08) Eng Number  1E-9 was displayed as 0
Version 1.0.4 (Dez 07) Bug in x! fixed
Version 1.0.3 (March 07) Sound on / off (right mouse key)
Version 1.0.2 (Feb 07) Decimal point input with point and comma possible
Version 1.0.1(Feb 07) Bug % Calculation Fixed, Sto*,Sto+, etc. implemented
Version 1.0.0(Feb 07) Beta Version