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This User Guide describes how to use the DreamCalc Scientific, Graphing and Financial calculators (see right).

See also: Introductory Examples

DreamCalc supports three styles of input—namely prefix algebraic (MAL), postfix algebraic (CAL) and Reverse Polish Notation (RPN). In most examples in this User Guide, we assume prefix algebraic as it is the most widely used. For more information about input modes, refer to Input Order Notation.

Function Keys

You can click the keys with the mouse or use your keyboard. The [SHIFT] key grants you access to the functions printed above the keys, just as you would naturally expect. It is possible to use a combination of keyboard and mouse, i.e. holding the keyboard SHIFT while clicking keys with the mouse.

Each key typically supports several functions or input mnemonics. See below right. The colors vary depending upon the chosen skin, however, the color scheme remains consistent—each is colored uniquely.

DreamCalc Editions

Professional Edition (DCP)

• Fully Featured Package
• Advanced Financial Calculations
• Full Range of Scientific Functions
• Full Graphing Features
• Additional Advanced Features

Graphing Edition (DCG)

• Full Range of Scientific Functions
• Most Graphing Features
• No Financial Calculations
• Best Option for Scientific & Student Users

Scientific Edition (DCS)

• Full Range of Scientific Functions
• No Graphing or Financial Calculations
• Low Cost Option & Ideal Replacement for the Windows Calculator

• 1. Primary Function.
• 2. Shifted Function.
• 3. Base-N Key (must be in base-N mode).
• 4. Memory Register. Also digit in base-N mode for values A-F.
• 5. Constant (used with [CONST] key).

Paper Roll Window

In algebraic input modes, the Paper Roll Window keeps a historical record of your calculations. It is updated each time you press [ENTER]. In RPN mode, it shows the RPN stack.

Press F11 to show the Paper Roll Window at any time, or select it from the View menu.

In algebraic mode, you may add your own annotations simply by editing the paper roll text. By default, DreamCalc will save the paper roll when it exits. However, the paper roll will not keep an indefinite record. Eventually the oldest entries will be deleted to make room for new ones.

Memory Registers

The "Memory Registers" tab allows you to view and edit any numeric value held in DreamCalc memory. Values can be stored and recalled from the calculator keypad using [STO] and [RCL] with keys marked MEM, A-F and 0-9.

Chart & List Window

The Chart & List Window allows you to graph functions and plot list data. It is also where you input data for use in statistical calculations.

Press F12 to show the Chart & List Window at any time, or select it from the View menu.

DreamCalc can plot two functions simultaneously and show a range of charts, including histograms, bar charts, polar plots and regression fits.

To graph a function, simply select Function Graph from the window's Chart menu and type in your function using "x" as the variable. Specify the x-value range and click Enter (or select Plot A or Plot B from the Enter drop-down button).

See the Chart & List Window and Graphing Example pages for more information about DreamCalc's graphing capabilities.

Note: The ability to display charts is available in the Graphing & Professional Editions of DreamCalc only.