March 6, 2010. Scientific Calculator Precision 90 v1.0.0.5 was released. Improvement of exp, sinh, cosh, tanh, ctgh, scnh, csch for middle rage argument (1<=x<=400).

February 22, 2010. Taylor Calculator Level 2 v1.0.0.1 was released. Correction of division (for example, sin(1/x)).

February 22, 2010. Derivative Calculator Level 2 v1.0.0.2 was released. Correction of division (for example, sin(1/x)).

February 20, 2010. Taylor Calculator Level 1 v1.0.0.3 was released. Correction of division (for example, sin(1/x)).

February 19, 2010. Derivative Calculator Level 1 v1.0.0.3 was released. Correction of division (for example, sin(1/x)).

January 7, 2010. Taylor Calculator Real 36 v1.0.0.0 was released . New release.

November 5, 2009. Derivative Calculator Real 36 v1.0.0.0 was released. New release.

October 19, 2009. Derivative Calculator Real 27 v1.0.0.2 was released. Corrections.

October 18, 2009. Taylor Calculator Real 27 v1.0.0.2 was released. Corrections.

October 14, 2009. Compact Scientific Calculator 54 v1.0.0.3 was released. Correction of !, ^ functions.

October 13, 2009. College Scientific Calculator 45  v1.0.1.1 was released. Correction of !, ^ functions.

October 12, 2009. Compact Scientific Calculator 45 v1.0.0.4 was released. Further corrections of !, ^ functions.

October 11, 2009. Compact Scientific Calculator 36 v1.0.0.4 was released. Further corrections of !, ^ functions.

October 10, 2009. College Scientific Calculator 36  v1.0.1.2 was released. Further corrections of !, ^ functions.

October 9, 2009. Compact Scientific Calculator 27   v1.0.0.4 was released. Further corrections of !, ^ functions.

October 8, 2009. College Scientific Calculator 27  v1.0.1.2 was released. Further corrections of !, ^ functions.

September 27, 2009. College Scientific Calculator 27 v1.0.1.1 was released. Correction of !, ^ functions.

September 27, 2009. Compact Scientific Calculator 27 v1.0.0.3 was released. Correction of !, ^ functions.

September 23, 2009. Taylor Calculator Real 27 was released. New release.

September 18, 2009. Derivative Calculator Real 27 was released. New release.

September 17, 2009. College Scientific Calculator 27 v1.0.1.1 was released. Correction of !, ^ functions.

September 16, 2009. Compact Scientific Calculator 27 v1.0.0.3 was released. Correction of !, ^ functions.

September 11, 2009. Taylor Calculator Level 2 v1.0.0.0 was released. New release.

September 11, 2009. Derivative Calculator Level 2 v1.0.0.1 was released. Correction of !, ^, % .

September 11, 2009. Taylor Calculator Level 1 v1.0.0.2 was released. Correction of !, ^, % .

September 11, 2009. Derivative Calculator Level 1 v1.0.0.2 was released. Correction of !, ^, % .

September 10, 2009. Math Center Level 2 v1.0.1.4 was released. Correction of !, ^, % , and Scientific Calculator (some crash in buttons).

September 10, 2009. Math Center Level 1 v1.0.1.4 was released. Correction of !, ^, % .

September 9, 2009. Scientific Calculator Decimal v1.0.1.1 was released. Correction of !, ^, % .

September 4, 2009. Math Center Level 2 v1.0.1.3 was released. Correction of Delete command in right-click menu.

September 4, 2009. Math Center Level 1 v1.0.1.3 was released. Correction of Delete command in right-click menu.

September 2, 2009. Taylor Calculator Level 1 v1.0.0.1 was released. Correction of large numbers handling.

September 2, 2009. Derivative Calculator Level 1 v1.0.0.1 was released. Correction of large numbers handling.

September 1, 2009. Scientific Calculator Decimal v1.0.1.0 was released. Correction of Delete command in right-click menu.

August 26, 2009. Taylor Calculator Level 1 v1.0.0.0 was released. New release.

August 23, 2009. Math Center Level 2 v1.0.1.2 was released. Formulas similar to sin(x)^2 are allowed and handled as (sin(x))^2.

August 20, 2009. Scientific Calculator Decimal v1.0.0.9 was released. Formulas similar to sin(x)^2 are allowed and handled as (sin(x))^2.

August 18, 2009. Math Center Level 1 v1.0.1.2 was released. Formulas similar to sin(x)^2 are allowed and handled as (sin(x))^2.

August 10, 2009. Derivative Calculator Level 1 v1.0.0.0 was released. New release.

July 10, 2009. Complex Calculator Precision 45 v1.0.0.2 was released. Improved combinatorial function Combinations. New signature.

July 10, 2009. Scientific Calculator Precision 90 v1.0.0.3 was released. Improved combinatorial function Combinations. New signature.

July 10, 2009. Scientific Calculator Precision 81 v1.0.0.5 was released. Improved combinatorial function Combinations. New signature.

July 9, 2009. Complex Calculator Precision 36 v1.0.0.4 was released. Improved combinatorial function Combinations. New signature.

July 9, 2009. Scientific Calculator Precision 72 v1.0.0.8 was released. Improved combinatorial function Combinations. New signature.

July 9, 2009. Scientific Calculator Precision 63 v1.0.1.1 was released. Improved combinatorial function Combinations. New signature.

July 8, 2009. Complex Calculator Precision 27 v1.0.0.3 was released. Improved combinatorial function Combinations. New signature.

July 8, 2009. Scientific Calculator Precision 54 v1.0.1.3 was released. Improved combinatorial function Combinations. New signature.

July 8, 2009. Compact Scientific Calculator 54 v1.0.0.2 was released. Improved combinatorial function Combinations. New signature.

July 7, 2009. Math Center Level 2 v1.0.1.1 was released. New signature.

July 6, 2009. Complex Calculator Precision 18 v1.0.0.4 was released. Improved combinatorial function Combinations. New signature.

July 6, 2009. College Scientific Calculator 45 v1.0.1.0 was released. Improved combinatorial function Combinations. New signature.

July 6, 2009. Compact Scientific Calculator 45 v1.0.0.2 was released. Improved combinatorial function Combinations. New signature.

July 5, 2009. Math Center Level 1 v1.0.1.1 was released. New signature.

July 3, 2009. College Scientific Calculator 36 v1.0.1.0 was released. Improved combinatorial function Combinations. New signature.

July 3, 2009. Compact Scientific Calculator 36 v1.0.0.2 was released. Improved combinatorial function Combinations. New signature.

July 3, 2009. Scientific Calculator Decimal v1.0.0.8 was released. New signature.

July 2, 2009. Compact Scientific Calculator 27 v1.0.0.2 was released. Improved combinatorial function Combinations. New signature.

July 2, 2009. College Scientific Calculator 27 v1.0.1.0 was released. Improved combinatorial function Combinations. New signature.

July 2, 2009. Household Calculator v1.0.0.6 was released. New signature.

July 1, 2009. Free Units Converter v1.0.0.2 was released. New signature.

July 1, 2009. Free Calculator v1.0.0.1 was released. Enter button. New signature.

June 26, 2009. Scientific Calculator Precision 90 v1.0.0.1 was released. Name "Common Constants" has been corrected.

June 23, 2009. Scientific Calculator Precision 90 v1.0.0.2 was released. Name "Common Constants" has been corrected.

June 20, 2009. Scientific Calculator Precision 81 v1.0.0.4 was released. Name "Common Constants" has been corrected.

June 18, 2009. Complex Calculator Precision 36 v1.0.0.3 was released. Name "Common Constants" has been corrected.

June 15, 2009. Scientific Calculator Precision 72 v1.0.0.7 was released. Name "Common Constants" has been corrected.

June 12, 2009. Scientific Calculator Precision 63 v1.0.1.0 was released. Name "Common Constants" has been corrected.

May 30, 2009. Complex Number Calculator Precision 45 was released. New release.

May 18, 2009. Scientific Calculator Precision 90 v1.0.0.1 was released. All text-boxes got uniform right-click menus.

May 5, 2009. Complex Calculator Precision 18 v1.0.0.3 was released. All text-boxes got uniform right-click menus. Links to international support pages.

May 4, 2009. Math Center Level 1 v1.0.1.0 was released. All text-boxes got uniform right-click menus.

May 2, 2009. Compact Scientific Calculator 54 v1.0.0.1 was released. All text-boxes got uniform right-click menus.

May 1, 2009. Compact Scientific Calculator 45 v1.0.0.1 was released. All text-boxes got uniform right-click menus.

April 30, 2009. Compact Scientific Calculator 36 v1.0.0.1 was released. All text-boxes got uniform right-click menus.

April 29, 2009. Compact Scientific Calculator 27 v1.0.0.1 was released. All text-boxes got uniform right-click menus.

April 28, 2009. College Scientific Calculator 45 v1.0.0.9 was released. All text-boxes got uniform right-click menus. Links to international support pages.

April 28, 2009. Scientific Calculator Decimal v1.0.0.7 was Released.  All text-boxes got uniform right-click menus.

April 27, 2009. College Scientific Calculator 36 v1.0.0.9 was released. All text-boxes got uniform right-click menus. Links to international support pages.

April 27, 2009. Household Calculator v1.0.0.5 was released.  All text-boxes got uniform right-click menus.

April 26, 2009. College Scientific Calculator 27 v1.0.0.9 was released. All text-boxes got uniform right-click menus. Links to international support pages.

April 23, 2009. Roman Arabic Numerals Converter v1.0.0.0 was released. New release.

April 16, 2009. Scientific Calculator Precision 90 v1.0.0.0 was released. New release.

April 14, 2009. Scientific Calculator Precision 81 v1.0.0.2 was released. All text-boxes got uniform right-click menus. Links to international support pages.

April 12, 2009. Scientific Calculator Precision 72 v1.0.0.5 was released. All text-boxes got uniform right-click menus. Links to international support pages.

April 10, 2009. Scientific Calculator Precision 63 v1.0.0.8 was released. All text-boxes got uniform right-click menus. Links to international support pages.

April 9, 2009. Scientific Calculator Precision 54 v1.0.1.1 was released. Width was changed from 780 to 790 pixels for better Vista compatibility.

April 8, 2009. Math Center Level 2 v1.0.0.9 was released. Removing "white spaces" from formula in Graphing Calculators. Improved integration in Graphing Calculator 2D Numeric.

April 5, 2009. Math Center Level 1 v1.0.0.9 was released. Removing "white spaces" from formula in Graphing Calculator 2D.

April 3, 2009. College Scientific Calculator 45 v1.0.0.8 was released. Links to international support pages.

April 1, 2009. College Scientific Calculator 36 v1.0.0.8 was released. Links to international support pages.

March 31, 2009. College Scientific Calculator 27 v1.0.0.8 was released. Links to international support pages.

March 21, 2009. Scientific Calculator Precision 81 v1.0.0.1 was released. Error in Sa(0) and NSa(0) was corrected.

March 19, 2009. Compact Scientific Calculator 27 v1.0.0.0 was released.

March 14, 2009. Compact Scientific Calculator 36 v1.0.0.0 was released.

March 11, 2009. Compact Scientific Calculator 45 v1.0.0.0 was released.

March 7, 2009. Compact Scientific Calculator 54 v1.0.0.0 was released.

February 18, 2009. Scientific Calculator Precision 81 v1.0.0.0 was released.

February 15, 2009. Complex Calculator Precision 36 v1.0.0.1 was released. Button Abort was added. Improvement of Σ and Π .

February 15, 2009. Scientific Calculator Precision 72 v1.0.0.4 was released. Button Abort was added. Improvement of Σ and Π .

February 4, 2009. Complex Calculator Precision 36 v1.0.0.0 was released.

February 4, 2009. Scientific Calculator Precision 72 v1.0.0.3 was released. Height was change from 770 to 760.

February 4, 2009. Scientific Calculator Precision 63 v1.0.0.7 was released. Height was change from 770 to 760.

January 31, 2009. Complex Calculator Precision 27 v1.0.0.1 was released. Bugs pi, 0+0 were fixed.

January 31, 2009. Complex Calculator Precision 18 v1.0.0.2 was released. Bugs pi, 0+0 were fixed.

January 31, 2009. Scientific Calculator Precision 54 v1.0.1.0 was released. Bugs pi, 0+0 were fixed.

January 31, 2009. College Scientific Calculator 45 v1.0.0.7 was released. Bugs pi, 0+0 were fixed.

January 31, 2009. College Scientific Calculator 36 v1.0.0.7 was released. Bugs pi, 0+0 were fixed.

January 31, 2009. College Scientific Calculator 27 v1.0.0.7 was released. Bugs pi, 0+0 were fixed.

January 30, 2009. Math Center Level 2 v1.0.0.8 was released. Integer Calculator and Rational Calculator were finished.

January 29, 2009. Math Center Level 1 v1.0.0.8 was released. Simple Integer Calculator and Simple Rational Calculator were finished.

January 25, 2009. Complex Calculator Precision 27 was released.

January 25, 2009. Complex Calculator Precision 18 v1.0.0.1 was released. Some bugs are removed.

January 25, 2009. Scientific Calculator Precision 72 v1.0.0.2 was released. User Constants are enabled by default.

January 25, 2009. Scientific Calculator Precision 63 v1.0.0.6 was released. User Constants are enabled by default.

January 20, 2009. Complex Calculator Precision 18 was released.

January 14, 2009. College Scientific Calculator 27 v1.0.0.6 was released. Bug (+n) was fixed. Power function nE(large exp)^(0<x<1) was improved.

January 14, 2009. College Scientific Calculator 36 v1.0.0.6 was released. Bug (+n) was fixed. Power function nE(large exp)^(0<x<1) was improved.

January 14, 2009. College Scientific Calculator 45 v .0.0.6 was released. Bug (+n) was fixed. Power function nE(large exp)^(0<x<1) was improved.

January 14, 2009. Scientific Calculator Precision 54 v1.0.0.9 was released. Bug (+n) was fixed. Power function nE(large exp)^(0<x<1) was improved.

January 14, 2009. Scientific Calculator Precision 63 v1.0.0.5 was released. Bug (+n) was fixed. Power function nE(large exp)^(0<x<1) was improved.

January 14, 2009. Scientific Calculator Precision 72 v1.0.0.1 was released. Bug (+n) was fixed. Power function nE(large exp)^(0<x<1) was improved.

January 1, 2009. Scientific Calculator Precision 72 was released.

All products got new icons. Version number was incremented by 1.

December 29, 2008.  Math Center Level 2 v1.0.0.6 was released.  Improvement of Print and Print Preview.

December 29, 2008.  Math Center Level 1 v1.0.0.6 was released.  Improvement of Print and Print Preview.

December 27, 2008.  Scientific Calculator Decimal v1.0.0.5 was released.  Improvement of Print and Print Preview.

December 26, 2008.  Household Calculator 63 v1.0.0. was released.  Improvement of Print and Print Preview.

December 24, 2008.  Scientific Calculator Precision 63 v1.0.0.4 was released.  Improvement of Print and Print Preview.

December 24, 2008.  Scientific Calculator Precision 54 v1.0.0.8 was released.  Improvement of Print and Print Preview.

December 23, 2008.  College Scientific Calculator 45 v1.0.0.4 was released.  Improvement of Print and Print Preview.

December 23, 2008.  College Scientific Calculator 36 v1.0.0.4 was released.  Improvement of Print and Print Preview.

December 22, 2008.  College Scientific Calculator 27 v1.0.0.4 was released.  Improvement of Print and Print Preview.

December 21, 2008.  Math Center Level 2  v1.0.0.5 was released.  Rational Calculator was added.

December 15, 2008.  Math Center Level 1  v1.0.0.5 was released.  Simple Rational Calculator was added.

December 10, 2008.  Math Center Level 2  v1.0.0.4 was released.  Integer Calculator was added.

December 9, 2008.  Math Center Level 1  v1.0.0.4 was released.  Simple Integer Calculator was added.

December 1, 2008.  Scientific Calculator Precision  54 v1.0.0.7 was released.  Button Payment was added.

December 1, 2008.  Scientific Calculator Precision 63 v1.0.0.3 was released.  Button Payment was added.

 December 1, 2008.  College Scientific Calculator 45 v1.0.0.3 was released.  Button Payment was added.

December 1, 2008.  College Scientific Calculator 36 v1.0.0.3 was released.  Button Payment was added.

December 1, 2008.  Math Center Level 2 v1.0.0.3 was released.  Button Payment was added.

December 1, 2008.  Math Center Level 2 v1.0.0.3 was released.  Button Payment was added.

December 1, 2008.  College Scientific Calculator 27 v1.0.0.3 was released.  Button Payment was added.

November 30, 2008. Scientific Calculator Decimal v1.0.0.4 was released. Button Payment was added.

November 30, 2008. Household Calculator v1.0.0.2 was released. Button Payment was added.

November 25, 2008. Scientific Calculator Precision 54 v1.0.0.6 was released. More relaxed protection scheme.

November 25, 2008. College Scientific Calculator 45 v1.0.0.2 was released. More relaxed protection scheme.

November 25, 2008. College Scientific Calculator 36 v1.0.0.2 was released. More relaxed protection scheme.

November 25, 2008. College Scientific Calculator 27 v1.0.0.2 was released. More relaxed protection scheme.

November 24, 2008. Math Center Level 2 v1.0.0.2 was released. More relaxed protection scheme.

November 23, 2008. Math Center Level 1 v1.0.0.2 was released. More relaxed protection scheme.

November 23, 2008. Scientific Calculator Decimal v1.0.0.3 was released. More relaxed protection scheme.

November 21, 2008. Household Calculator v1.0.01 was released. More relaxed protection scheme.

October 14, 2008. Math Center Level 2 v1.0.0.1 was released. Anti Alias and High Quality are added.

October 13, 2008. Math Center Level 1 v1.0.0.1 was released. Anti Alias and High Quality are added.

October 1, 2008. Scientific Calculator Precision 54 v1.0.0.5 was released.

September 19, 2008. Scientific Calculator Precision 63 v1.0.0.1 was released.

September 18, 2008. College Scientific Calculator 45 v1.0.0.0 was released.

September 18, 2008. College Scientific Calculator 36 v1.0.0.1 was released.

September 18, 2008. College Scientific Calculator 27 v1.0.0.1 was released.

September 16, 2008. College Scientific Calculator 36 v1.0.0.0 was released.

September 15, 2008. College Scientific Calculator 27 v1.0.0.0 was released.

September 12, 2008. Scientific Calculator Precision 63 v1.0.0.0 was released.

September 11, 2008. Scientific Calculator Precision 54 v1.0.0.3 was released. Fix in Power function.

September 8, 2008. Scientific Calculator Precision 54 v1.0.0.2 was released. Symbolic entry of Infinity, Uncertainty, and NaN was enabled.

September 6, 2008. Scientific Calculator Precision 54 v1.0.0.1 was released. Improvement in speed.

September 1, 2008.  Scientific Calculator Precision 54 was released.

June 30, 2008

Version v1.0.0.1 was released. The E-button was enabled. Now it is possible ti use expressions like 5E-25, E20 etc. The algorithm of trigonometric functions was improved. Now the accuracy of expression sin(E20) is about 8 digits.

June 24, 2008

A bug in Scientific Calculator Decimal was fixed. Please, download and install. Uninstall the old version and install this. The new version has blue "=calculate" button.

Write to [email protected] if you have questions, reports, or advices.

© 2008 Tvalx