RedCrab Calculator

RedCrab Updates

Version 6.20
12.09.2017

Cumulative update with new features, bug fixes and improvements. New functions for graphical representation of complex numbers and and statistical evaluations.
New function:
Erf, Erfc, Ierf, Ierfc, Beta, IBeta, PlotFiveN



Version 6.19
29.08.2017

Cumulative update with new features, bug fixes and improvements. New functions for Bessel, Struve, Psi and more.



Version 6.18
15.08.2017

Cumulative update with new features, bug fixes and improvements. Display of tables improved. Function Rnd and URnd improved. New function Rndf and more improvements in details.



Version 6.17.01
08.08.2017

Cumulative update with bug fixes and improvements. Bug-fix in the selection of root symbols.



Version 6.17
05.08.2017

Cumulative update with new features, bug fixes and improvements. Input handling with fraction bar and root symbols improved. More improvements in details.



Version 6.16
26.07.2017

Cumulative update with new features, bug fixes and improvements. Tooltips and design improved.



Version 6.15
17.07.2017

Cumulative update with new features, bug fixes and improvements. Undo function improved and more improvements in detail.



Version 6.14
22.06.2017

Cumulative update with new features and improvements.
New format of the Mathframes. Functions of Insert, Delete, Home, End and Return keys improved.

Version 6.13
15.06.2017

Cumulative update with new features and improvements.
New Popup menus and more improvements in detail.



Version 6.12
08.06.2017

Cumulative update with bug fixes and improvements.
New functions: Ellipse, Line, Rect.



Version 6.11
02.06.2017

Cumulative update with bug fixes and improvements.
Enhanced printer features and more.



Version 6.10.3
27.04.2017

Cumulative update with bug fixes and improvements. After a run-time error, the button enter was blocked; this bug is fixed.



Version 6.10.2
18.04.2017

Cumulative update with bug fixes and improvements.



Version 6.10.1
22.02.2017

Cumulative update with bug fixes and improvements.



Version 6.10
06.02.2017

Security update! Combined update with bug fixes and improvements.

Bug fix: Depending of the keyboard setting, subscript switching with the keys CTRL + 6 doesn't work. Undo function improved. More improvements in detail.

New function: Surface() draws 3D-surfaces and wire frame models. New functions for tables and matrices: RemCol(), RemRow() deletes columns and rows. Calculation of L1 and L2 norm of a matrix with Norm1() and Norm2(). GetRow() returns a matrix row.



Version 6.9
25.01.2017

Security update! Combined update with bug fixes and improvements.

Bugfix: An empty reference in charts or image boxes could cause a run-time error.
Incorrect setting of the keyboard and typing an invalid character could block the keyboard.
Ooutput of strings in tables improved.
More improvements in details.

New functions for tables and matrices: GetAt, SetAt, GetCol, Chol, Recon, GetCol, LU, QR, Svr.
The function ClrCol, ClrRow, Min, Max are improved.



Version 6.8.1

13.01.2016

Security update! Combined update with bug fixes and improvements.

Bugfix: In version 6.8 an error can occur when a table which contains text is displayed.

New: More then 30 new functions for data fields and matrices in freeware version released.


Version 6.8
10.01.2017

12 new functions for matrices and arrays. Font setting in text boxes and display of tables improved. More improvements in details.


Version 6.7

13.12.2016

Security update. Cumulative update with bug fixes and improvements.

  • 15 new scientific functions
  • Trigonometry settings (Deg,Rad) now saved in file
  • New plot function for drawing of function graphs.
  • Reference setting for chart boxes improved
  • Color panel and color setting bug from version 6.6 ist fixed
Revised function Panel and more improvements in detail.



Version 6.6.1

02.12.2016

Security update! Cumulative update with bug fixes and improvements.
  • Problems with empty text boxes are fixed
  • Wrong display of legends in charts with one series is fixed
  • 30 statistics functions
  • 15 generator functions
  • 6 conversion functions
An error in the BigInteger unit occurred in version 6.6.0. The function big() is temporarily blocked. Revised function Panel and more improvements in detail.


Version 6.6.0
01.12.2016

Security update! Cumulative update with bug fixes and improvements.

  • Problems with empty text boxes are fixed
  • Wrong display of legends in charts with one series is fixed
  • 30 statistics functions
  • 15 generator functions
  • 6 conversion functions
Big()for calculations with maximum range and accuracy. Revised function Panel and more improvements in detail.


Version 6.5.0
21.11.2016

Cumulative update with bug fixes and improvements.
A problem that occurred when the HALT button is clicked is now fixed, incorrect error message when an empty TextBox is closed is eleminated. Empty, inactive text boxes are marked with a light frame. More improvements in detail.


Version 6.4.0

01.11.2016

RedCrab includes an integrated application interface (API). The API can send data to external programs for calculation. The external programs can run on the same computer or on other computers in the network.
Tooltips improved and other improvements in detail.





 
RedCrab News

22.06.2017

In version 6.13, the handling is improved by new pop-up menus.

For easier handling, a separate frame is assigned to each mathematical term from version 6.14 onwards. Files in the old format will be processed as usual.

In version 6.14, with Insert and Delete keys, rows on the worksheet can be inserted or deleted (previously only possible on frames). In addition, the functions of the Home, End and Enter keys are improved.

More informations here.



08.02.2017

In RedCrab version 6.10 the function Surface is integrated to draw 3D surface and wireframe models. The use of surface reference variables in the older versions is no longer supported as of version 6.10.



13.12.2016

RedCrab version 6.7 has an integrated plot function. The plot function can draw function graph and other 2-D plots.

The allocation of the reference variable for chart boxes and labels has been simplified.



01.11.2016
Expanding RedCrab through you own programs

Starting with version 6.4 RedCrab includes an integrated application interface (API) to communicate with other programs. Through the API, you can perform calculations in external programs on the same computer or on different computers in the network. External calculations can be performed parallel to accelerate. You will find more information here.



17.08.2016
RedCrab Calculator VI

Version 6.0 is available for download. All shareware licenses for version V, that have been acquired since June 2015 are valid also for version VI.



22.01.2016


Starting with version 5.7, RedCrab works with complex numbers and complex variables.

The usual rules for real numbers can be applied to complex numbers. All trigonometric and logarithmic functions and the functions »Abs«, »Power«, »Sqrt« and »Sqr« work with complex numbers.

Additional functions for complex numbers are Re, Im, Phase, Magnitude, FromPolar and Conjugate.


14.01.2016

Starting with version 5.6, in RedCrab V a class concept is introduced. A RedCrab math class contains hidden methods to calculate a specific object.

For example the class Cone calculated parameters of a cone. If the radius and the height as known arguments are passed to Cone, Cone returns the diameter, surface or volume as result. Or from the volume and height, the diameter and surface is calculated.

In more complex classes such as class Cylinder, a class can replace hundreds of individual functions. Classes for geometric figures are installed in version 5.6. Also classes for electrics and mechanics are planned in the future versions.

The classes are not available in the freeware version.


23.11.2015

RedCrab V for Windows XP now

From version 5.5 onwards, RedCrab runs with Windows XP


20.11.2015

RedCrab V for Windows XP coming soon

The next version of RedCrab (end of November) will run without limiting of functions under framework 4.0. So it is for all users of Windows XP and older Vista and W7 systems available.  

10.11.2015

integrated online help

From version 5.4 onwards, RedCrab has integrated online help. A help to all built-in functions can be called from the program through hyperlinks. The description appears in a browser window by clicking on a function button with the right mouse. On the worksheet press the F1 key. F1 displays the description for the function name under the cursor.  

4.11.2015

New Webpages are online today .
Online manual is under construction.