Version History

Latest Release DC4.8.0

If your version of DreamCalc is earlier than this, you can update from the Download Page.

New Features

New features include:

  • New User Guide.

Minor Changes

Minor changes include:

  • Fundamental physical constants updated to CODATA 2010.
  • Changed DreamCalc default skin.
  • Bug Fix: Graph footer not show/hiding properly.
  • Other minor changes.

Release DC4.7.2

This was a patch release only.

Minor changes include:

  • Bug Fix: Adjustments for larger controls on Windows 7.
  • Bug Fix: DEP issue affecting certain x64 systems.

Release DC4.7.1

This was a patch release only.

Minor changes include:

  • Bug Fix: The nCr function was not being added to the calculation log.
  • Change: Application settings will now "roam" with the user.
  • Change: Minor updates to User Guide.

Release DC4.7.0

New features include:

  • New AveDev and MAE statistical functions.
  • Help system now employs plain HTML files rather than CHM file.

Minor changes include:

  • Bug Fix: Problem entering complex numbers with negative imaginary component in RPN mode.
  • Bug Fix: Incorrect RMSE results with small N.
  • Bug Fix: Chart did not always update when chaning statistical mode.

Release DC4.6.2

This was a patch release.

Minor changes include:

  • Bug Fix: Loss of sign in RPN mode under certain conditions.
  • Bug Fix: DreamCalc could be shown off screen with multi-monitors under certain conditions.
  • Minor update to polar plots--all four quadrants now always shown.

Release DC4.6.1

This was a patch release.

Minor changes include:

  • Bug Fix: Occasional incorrect Syntax Error in Graphing Window.
  • Bug Fix: Integers were not always rounded in Base 32 and 64 Modes.

Release DC4.6.0

New features in this release include:

  • New High Contrast Skin

Minor changes include:

  • Bug Fix: Error when starting hex input with 'B'.
  • Updates to the User Guide

Release DC4.5.2

New features in this release include:

  • Ability to install and register DreamCalc from the command line or batch script. This was added to simply site-wide deployment for educational institutions. See here for more information.

Minor changes include:

  • Updates to the User Guide

Release DC4.5.1

This was a custom release for Mississippi State University only.

Release DC4.5.0

New features in this release include:

  • X-axis intercept option added to the Chart Window Calc button.
  • New application wide option to disable "mouse over" hints was added.

Minor changes include:

  • Change: Chart Window Calc button drop down options re-arranged.
  • Change: The "Chart Cursor" option was removed from the Options Window. (There was no longer any value in this option.)
  • Change: The "Vertical Y-Axis Label" option was removed from the Options Window.
  • Change: Other minor changes & updates to User Guide.
  • Bug Fix: Minor bug fixes.

Release DC4.4.1

This was a patch release.

Minor changes include:

  • Bug Fix: Open parentheses level not showing in LCD display.
  • Bug Fix: Clicking on [Unzoom] in chart stores the cursor coordinates in the plot tracer box, overwriting any coordinates already stored. This shouldn't happen.

Release DC4.4.0

New features in this release include:

  • The Chart Window now supports Numerical Calculus.
  • You can now calculate insection points in dual function plots.
  • It is now possible to paste an input formula string into the calculator using CTRL-V.
  • DRGC key added to convert input angles.

Minor changes include:

  • Change: Paper Roll output syntax updated to make calculation strings unambiguous to the input parser.
  • Change: Skins have been updated.
  • Change: The "Metal" skin has been dropped because it was not sufficiently different from "Zebra".
  • Change: Function key hints have been improved.
  • Change: Ran (random) function moved to the MISC key.
  • Change: The "ay" register renamed "ty", so that "t" is consistently used to denote angles.
  • Change: Improvements to the rendering of the main window.
  • Change: Cashflow list can now be hidden by moving the splitter all the way to the right.
  • Change: Updates to the User Guide.
  • Change: Other minor changes and improvements.
  • Bug Fix: Open & Save dialogs now default to the user's home directory.
  • Bug Fix: Chart Window title text did not fully follow the selected color scheme.
  • Bug Fix: The license key input window can now accept non-ASCII characters.

Release DC4.3.3

This was a patch release.

Minor changes include:

  • Bug Fix: Earth gravitation constant was incorrect.

Release DC4.3.2

This was a patch release.

Minor changes include:

  • Bug Fix: DreamCalc did not launch silently when starting with Windows.

Release DC4.3.1

New features in this release include:

  • Ability to set chart titles and axis captions in Professional & Graphing Editions.

Minor changes include:

  • Change: Physical constants updated to CODATA 2006.
  • Change: Updates to Save/Open dialogs in Windows Vista.
  • Change: Segoe UI font is used on Windows Vista.
  • Change: Installer now has digital certificate.
  • Change: User Guide updates.
  • Change: Menu caption and other minor changes.
  • Bug Fix: Keyboard input stops working correctly because of locked ALT key down state.
  • Bug Fix: Window positioning on multi-screen systems.

Release DC4.3.0 Beta

Testers' beta release only. See DC4.3.1 (above) for all new features.

Release DC4.2.0

New features include:

  • New Stone/Kilogram conversions.

Minor changes include:

  • Change: Inserting constants and recalling values in RPN mode now results in a stack push without the need for [ENTER].
  • Change: Minor change to natural fraction notation (now shows "1 + 1/3", rather than "1: 1/3").
  • Change: Support for DEP.
  • Change: Other minor and cosmetic changes.
  • Bug Fix: Pasting complex numbers into DreamCalc could occasionally show incorrect values.
  • Bug Fix: Rounding error in fixed precision mode. This bug could also present itself in normal mode, but was extemely rare.

Release DC4.1.0

New features include:

  • New Cubic Regression mode added to all editions.
  • Re-write of Histogram & Frequency Polygon charts.
  • New Q-Q Plot added to Profession Edition Only.
  • New Skew & Kurtosis Functions.
  • New GRan# function under [MISC] key.
  • New "Consolidate Frequencies" menu option in List Window.

Minor changes include:

  • Change: Mode & Median functions moved to [S-DIST] menu key.
  • Change: Zc function renamed to "zs" and now accepts only confidence level r(-1, 1).
  • Change: Normalized Variate "t" function renamed to "Z".
  • Change: Gaussian probability functions renamed to PG, RG and QR.
  • Change: The following functions added to Function Grapher: zs, GRan#, PG, RG and QR.
  • Change: Numerous small changes, fixes and tweaks.
  • Change: Improved documentation of statistical functions.
  • Bug Fix: Error messages displayed in Graphing Window. Fixed.
  • Bug Fix: Polynomial Solver could give erroneous results under certain conditions. Fixed.
  • Bug Fix: Median could give wrong result given fractional frequencies.

Release DC4.0.3

This was a patch release.

Minor changes include:

  • Bug Fix: GCD function incorrectly shown as "GCM" on [3] key.
  • Bug Fix: MOD, LCM and GCD helps hints were incorrect.

Release DC4.0.2

This was a patch release.

Minor changes include:

  • Bug Fix: Fix for system tray bug where DreamCalc icon would either not appear, or two icons would initially be shown.

Release DC4.0.1

This was a major new release. DC4 now supports Windows Vista and gives DreamCalc a new rugged look. Graphing has been substantially improved in DC4 and you can now "drag-size" the main window. Other new features include an optional row of base-N keys, access to the full range math functions in base-N mode, and the ability to annotate the Paper Roll.

New user interface features include:

  • DreamCalc now supports Windows Vista.
  • A new look and new range of skins.
  • Now possible to resize the main window by dragging it.
  • The full range of math functions are now accessible in base-N mode.
  • New base-N keys (optional).
  • You can now edit the Paper Roll with your own annotations.
  • Statistical calculations can now be performed directly from the list window.
  • Discounted cashflow calculations can also be performed form the list window in the Professional Edition.
  • The User Guide has received a lot of attention, and has been stripped of its previous verbosity.

New graphing features include:

  • DreamCalc Graphing has been substantially improved. Changes include...
  • The concept of "Graph Variants" has gone--instead there is a new "Axes" menu option which should be much clearer.
  • New cursor coordinate feedback feature, including the ability to trace curves with the cursor.
  • Polar charts have been re-worked and a polar grid is now shown.
  • Logarithmic plots have been re-worked and now shows a decent logarithmic grid.
  • Chart zooming improved, and new animated zoom option added.
  • Now possible to plot up to 2000 points. Data lists also allow 2000 entries.
  • Printing improved, and new "Monochrome Printing" option added to save your color ink.
  • SD Bar Charts now show frequencies accurately as bar widths, rather than showing multiple bars.
  • Function Grapher now recognises the "t" parametric variable (x and t are mutually exclusive).
  • Ability to specify range as part of graphing function input string.
  • The Pie Chart has been removed due to its rather limited value. (If I'm inundated with requests to re-instate it, I'll consider doing so, but I doubt many people will miss it.)

Other changes include:

  • Backspace key behavior improved.
  • New RMSE function added to regression modes.
  • New DLHRS function added to MISC key.
  • MOD base-N function renamed to REM (remainder) as this is strictly correct behaviour, and..
  • New (additional) MOD function added. Note that it's behavior is subtly different to base-N REM.
  • New "Natural Constant" group added to the Insert menu.
  • If you don't have the additional base-N key view selected, then Base-N logic functions must now be accessed from the "LOGIC" key.
  • The COST,SELL & MAR% keys replaced on scientific interface with MOD, LCM & GCD. (COST, SELL & MAR% are still available in Simple Calculator view.)
  • The ΔTIME function removed, as I believe few people used this. Replaced with "√2", "√3", and "ln2" constants.
  • CLMEM moved to DEL key in order to keep the AC key clear of other functionality.
  • UNDO key removed (was unnecessary), but CTRL-Z keyboard short-cut still active.
  • Some keyboard short-cuts changed.
  • Options window has more options and has been re-organized. Graphing preview added.
  • No support for Windows 95, 98 & ME.
  • Bug Fix - It was possible to recall complex values in base-N mode. This unintended feature has been removed.
  • Bug Fix - No range error was given when keying in large out of range values.
  • Bug Fix - Polar Charts could show incorrect results using angle mode other than radians.
  • Bug Fix - An error message was shown when plotting x-y data where all y values where zero.
  • Bug Fix - ALT-V on S-VAR conflicted with View menu option.
  • Bug Fix - Tabbing order incorrect on Calendar Page of Options Windows.
  • Other - Numerous minor changes and tweaks.