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Version History

Latest Release DC4.7.0

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

New Features

New features include:

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

Minor Changes

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

New Features

None. This was a patch release.

Minor Changes

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

New Features

None. This was a patch release.

Minor Changes

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

New features in this release include:

• New High Contrast Skin

Minor Changes

Minor changes include:

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

Release DC4.5.2

New Features

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

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

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

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

Minor Changes

This was a patch release and 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

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.

Changes

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

Minor Changes

This was a patch release and minor changes include:

• Bug Fix: Earth gravitation constant was incorrect.

Release DC4.3.2

Minor Changes

This was a patch release and minor changes include:

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

Release DC4.3.1

New Features

New features in this release include:

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

Minor Changes

Other 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

• New Stone/Kilogram conversions.

Minor Changes

• 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

• 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

• 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

Minor Changes

• 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

Minor Changes

• 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 (New DreamCalc 4)

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.

Major New Interface Features

• 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.

Major New Graphing Features

• 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

• 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-longer supporting Windows 95, 98 & ME (see Support Page FAQs).
• 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.

Public Beta Release DC4.0.0

Public Beta Release of DreamCalc 4. See DC4.0.1 Release for changes over DreamCalc 3.

Alpha Release DC3.5.3

This was an alpha release concerning Windows Vista compatibility only.

Partnered Release DC3.5.2

This was a partnered release in association with:

CONNECTIONS ACADEMY™
www.connectionsacademy.com.

Release DC3.5.1

Major New Features

• Improved Keyboard Input Design (see Keyboard Input documentation).
• Added keys to "Simple Calculator" view.
• Hand cursor over keys (optional).
• Universal Time option added (affects TODAY function & screen clock).

Other Changes

• Added "Check for Latest Version" menu option for registered users.
• New "key hint" settings in Options Window.
• DOW function now shows day in bottom right-hand corner of screen.
• DreamCalc User Guide now has a standard left-hand contents pane.
• Fixed bug for rare, but critical, error where DC3 could hang when reading clipboard contents.
• Fixed bug where result of tan(45) should be 1 not 0.999...
• Fixed bug for occasional rounding error.
• Fixed bug where WIN1899 day calendar results where out by 0.5.
• Fixed bug where program short-cut could not find the license file.
• The "Astronomical Years" option has been removed (see calendar documentation).
• Change to delta-TIME function behavior (see calendar documentation).
• Updates to User Guide.
• Other minor changes & updates.

Release DC3.5.0 Beta

Testers' beta release only. See DC3.5.1 for new features in version 3.5.

Release DC3.4.0

Major New Features

• DreamCalc "Standard Edition" renamed to "Graphing Edition".
• Graphing Edition (aka Standard Edition) now supports Polar Plots.
• New "Scientific Edition" of DreamCalc (without graphing) created.
• New CHM help file format.
• MISC function menu added, offering LCD, GCD, PRIME & PRIMEQ functions.

Other Changes

• Ability to independently range x-y axis from zero in graphing display.
• Fixed bug where factorial 0!=0. It now returns 1. Thanks to N. Revie for pointing this out.
• Fixed bug where abs and arg functions were active in base-n mode.
• Pareto Charts removed. Presentation of data was incorrect and there was no way to fix this given the limitations of the DreamCalc graphing display. Thanks to R. Sonntag for letting me know of the problem.
• New About Box showing the "Big Angry Dog" logo.
• Other minor bug fixes and changes.

Release DC3.3.2

Major New Features

• None. Patch release only.

Other Changes

• Fixed bug where plot label was not always shown on graphs.
• Improved untidy transparent window edge in large interface settings.
• Support for RegNow compatibility.
• Minor changes to User Guide.

Release DC3.3.1

Major New Features

• Added "Specify Interval" option to function graphing.
• Re-work of the Graphing & List window. Some menus have be re-organized.
• New Quadratic Regression mode added to both editions of DreamCalc.
• New Polar Plotting feature added to Professional Edition.
• New Logistic Regression added to Professional Edition.
• New "Graphite Grey" skin added. The "Solar" was removed.
• The chart grid can now be turned on or off.
• Improvements to chart logarithmic scales.
• New Coefficient of Determination function added.
• New CopyReg Eq function added.
• Re-work of help pages, especially in areas concerning graphing.

Other Changes

• The COVAR# function moved to [S-DIST] menu key.
• Corel-R# function renamed as R#. R-f(x) & R-f(y) also renamed.
• The [X<>Y] key did not work in base-n mode. Now fixed.
• Re-organized certain aspects of Options Window.
• Change in chart zoom behavior. Must now use zoom-out menu or button.
• Radio items on Graphing Window can now be navigated using keyboard.
• Fixed bug when parsing string values containing commas.
• Fixed minor bug where data list counts where not always update in LCD.
• Other minor bug fixes and changes.

Release DC3.3.0 Beta

Testers' beta release only. See DC3.3.1 for new features.

Release DC3.2.1

Major New Features

• None. Patch release only.

Other Changes

• Fixed bug where TAB keyboard press was not activating the X<>Y key.
• Fixed some minor issues in logging of algebraic inputs.
• Other minor changes.
• Fixed a few typos in the User Guide.

Release DC3.2.0

Major New Features

• Polynomials solutions are now sent to the Paper Roll. This is an optional new feature, which is enabled by default.

Other Changes

• Fixed bug affecting algebraic input. Previously, in certain rare situations, input may have been incorrectly interpreted.
• Fixed minor bug affecting polynomial solver when repeating previous solution.
• Replaced two "postfix" functions in Function Grapher with prefix versions.
• Improved behaviour of ENG key. Change is subtle.
• Fixed some User Guide typos.

Release DC3.1.1

Major New Features

None. Patch release only.

Other Changes

• Fixed bug affecting input of negative imaginary components in MAL mode.
• Improvement to display of numerical list data when column is too narrow for full value to be shown.
• Fixed some User Guide typos.

Release DC3.1.0

First Public Release of DreamCalc 3.

Major New Features

This section lists major new features over DC2.

• New Graphing Tool able to plot both functions and list data.
• New Main Interface which supports resizing and high DPI screen resolutions.
• Reverse Polish Notation Input.
• Full Support for Complex Numbers.
• Polynomial Solver.
• 64 Bit Base-N Integer & Floating Point Modes.
• Improved Financial Functions.
• New Statistical Functions.
• Date Input & Calendar Calculations.
• New Memory View in the Paper Roll.
• Full Backspace & Undo Capabilities.
• New Skins.
• Hundreds of Pre-Defined Constants and Conversions.
• New Mini Window Roll-up Button.
• Hover Keyboard Hints which show keyboard hotkeys.

Important Bug Fixes

Major bug fixes over DC2.2.

• The invalid window handle error message, which appeared on some machine, has been fixed.
• When the Paper Roll became full, there was a latency on key presses.
• Precision errors affecting small number of machines.
• Bug fixes to Modern Input Mode, i.e. no way to enter "5 * -sin(5)".
• Inverse regression f(x) and f(y) gave incorrect results.
• Confidence interval gave incorrect results.
• StdErr gave incorrect results.
• AMORT function always gave a result with an error of +1.

Minor Changes & Fixes

Other less significant changes.

• Text Book input order renamed to "Modern Algebraic Order".
• Standard input order renamed to "Classic Algebraic Order".
• New optimum regression mode feature added.
• Long standing menu resizing bug has been fixed.
• Pasting into a mode screen was incorrectly permitted.
• Fixed - Grid title rows did not always update properly.
• Fixed - Max data limit inconsistency between calculator & tool window.
• Added COST, SELL & MARG functions.
• Fixed - Incorrect logging strings strings in Paper Roll.
• Added KB+ & KB- ENG key functions.
• Added BE~LE key function.
• Added several statistical functions, such as mode & median.
• Fixed - NOT incorrectly logged in Paper Roll.
• Fixed - CTRL C menu short-cut sometimes hidden.
• Minor bug fix to ENG key when in engineering mode.
• The toggle sign key now works on zero for compatibility with MAL mode.
• Fixed minor base-n bug when on limits of precision.
• Finally fixed an occasional rounding error.
• Conversions are now always postfix, even in MAL mode.
• Fixed - Negative DMS not always showing
• The Min key has gone - sorry - replaced with STO & RCL.
• Fixed - Negative ab/c fractions not always showing.
• New polar to rectangular functions.
• FACTOR function gone.
• The limited NT~FN key has gone.
• Fixed error where entering "0 : 5' 0"" DMS showed "0: 4' 60"".
• Power is now ^ symbol.
• The nth root function has been reversed, as with modern calculators.
• Improvements to behavior of TVM registers.
• Fixed bug where equations with redundant parentheses similar to (cos(Sum#X)) gave zero.
• New about box window.
• New Timeout error added.
• DreamCalc settings are now common to all users.
• New DreamCalc icon.
• Ability to print table data added.
• Addition and subtraction round in applicable radix.
• Csc, Sec and Cot functions removed to make room for calendar functions.
• Numerous other minor changes, bug fixes and tweaks.

See also: Legacy Version History, or Brief History of DreamCalc

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