v2.4.1

• Minor bug fixes, aesthetic improvements.
• (2007-04-16)

v2.4.0

• New Feature: 'echo' command, to print text to screen.
• New Feature: 'disp' command, to print variable name and value.
• New Feature: 'cls' command, clears screen just like the 'clear' command.
• Changed behavior of Vars menu: now inserts a variable name at cursor position.
• Changed behavior of ESC key: now clears input line, then minimizes on second key press.
• Reduced input-line flicker, particularly noticable on VISTA and slower machines.
• Fixed bug which did not save calculator settings on logout or shutdown.
• Fixed bug with overflow checking for trig functions.
• (2008-04-10)

v2.3.1

• Increased floating point accuracy of all calculator functions to 100 decimal digits of precision, or 350 bits.
• Other minor bug fixes.
• (2007-11-28)

v2.2.6

• Increased precision accuracy of logarithm and exponent.
• Improved error reporting for function domain errors. (Imaginary results, etc)
• Pressing 'enter' on a blank line will repeat the last calculation, if it contained 'ans' or '=' assignment.
• Fixed bug where abs(xx) function would overwrite value of 'xx' variable.
• (2007-08-28)

v2.2.4

• Increased memory buffer size for custom functions.
• (2007-08-17)

v2.2.3

• Fixed bug with hexadecimal conversion (sometimes displayed as floating point).
• (2007-06-22)

v2.2.2

• Fixed bug with scientific display, introduced in v2.2.1.
• (2007-06-13)

v2.2.1

• New Feature: Engineering notation display.
• New Feature: Now accepts/ignores thousand separators (such as a comma).
• (2007-05-17)

v2.2.0

• New Feature: Choice between multiple instances or single instance of CCalc.exe.
• New Feature: Optional reassignment of calculator appkey on certain keyboards.
• Minor bug fixes related to custom functions.
• (2007-03-17)

v2.1.1

• New Feature: pressing 'enter' on a blank line will repeat the last calculation, if it started with 'ans'.
• Minor bug fixes.
• (2006-08-20)

v2.1

• Fixed bug with HEX 0x0.
• New Feature: Improved options for display, including more control over scientific notation and thousands separator.
• Additional commands added for better scripting ability.
• Snap-to screen edge is now optional.
• (2006-05-13)

v2.0

• New Feature: create custom units for conversion
• New Feature: 10-key calculator option
• (2006-03-31)

v1.9.9

• Fixed a minor bug when displaying negative floating point values in hex.
• Added additional command line options.
• Added option for two's compliment notation in hex and binary.
• (2006-03-04)

v1.9.8

• Fixed the last of the european delimiter bugs
• (2005-12-07)

v1.9.7

• Fixed a bug that confused hex notation ending in 'E' with exponent notation.
• (2005-11-02)

v1.9.6

• Fixed a bug when rounding from 0.99999... to 1.
• Added "clear" command to clear screen text.
• (2005-09-27)

v1.9.5

• Fixed a bug when defining a custom function and using spaces
• (2005-09-15)

v1.9.4

• Fixed some quirks with unit conversion and high precision
• Fixed problem with european delimiters and functions
• Added "week" time unit to conversion list
• (2005-09-03)

v1.9.2

• Fixed program crash related to unit conversion, factorial
• Fixed problem with european delimiters and functions
• Fixed background color of the always-on-top pin
• (2005-08-18)

v1.9

• New Feature: Precision up to 80 significant figures!
• New Feature: Commands added for deleting variables, changing options, etc.
• New Feature: Command history is remembered between sessions.
• Fixed bug with font color selection (bug introduced in 1.8b).
• Fixed problems with multiple displays.
• (2005-08-02)

v1.8

• New Feature: Unit Conversion! See manual.
• New Feature: Ctrl-C will copy recent result if no text is selected.
• New Feature: Ctrl-. and Ctrl-, commands to set european decimal.
• Text in windows now automatically word wraps.
• Modulo (%) behavior changed to integer modulo.
• Fixed error with nested parenthesis in functions.
• Fixed "Home" key behavior.
• Fixed error when saving previous window position.
• Fixed logxx bug
• Fixed permanent minimize-to-tray bug.
• Fixed bug where in some cases all text would be black regardless of settings.
• (2005-04-23)

v1.7

• New Feature: Support for european-style decimal delimiter (comma instead of period)
• New Feature: Auto-evaluate while you type
• (2005-02-18)

v1.6 and previous

• New Feature: Minimize to system tray option.
• New Feature: support for custom defined functions as well as variables.
• New Feature: Stay-on-top option and snap-to-edges for calculator window positioning.
• New Feature: Two's compliment for negative binary and hexadecimal numbers
• New Feature: Window transparency option
• New Feature: Base conversion between decimal, hex, and binary
• Changed prompt character from '?' to '>'
• Added bitwise operators and additional functions
• Minor bug fixes