DB Calc for Windows is a scientific calculator and function plotter:

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Features:
- Direct formula input
- 10 constant memories
- Variables
- 1 cumulating memory
- Nearly unlimited nesting of brackets
- Automatic bracket completion
- Calculations in decimal, hexadecimal and binary number system - mixed number systems are allowed in one expression.
- Display in decimal, hexadecimal and binary format
- Edit expressions which have just been calculated
- More than one expression in one input line
- Program state (content of memories, input line, etc.) is saved at program termination
- Intelligent error messages: after issuing an error message the cursor points to the error location
- Plot and print function graphs (with labels for title and axes)
- Logic operators: AND, OR, XOR, NOT
- Square
- Reciprocal
- Square root, cubic root, root with random exponent
- Powers to basis e, to basis 10 and random basis
- Natural and common logarithm
- Trigonometric functions and inverse functions
- Three angle units: degrees, grads, radians
- Constant Pi
- Numeric integration (quadrature)
- Random numbers
- Absolute value
- Step function
- Minimum and maximum out of a nearly unlimited number of arguments
- Factorial
- Combinations and permutations
- Conversion between rectangular and polar coordinates and vice versa
- Conversion between decimal and sexagesimal system and vice versa
Plot functions:
- Normal and parametric plots - may be used simultaneously
- Labels for plot title and coordiante axes
- Displayed function is automatically used as title (editable)
- Linear and logarithmic units
- Number of tick marks may be changed
- Calculated expressions for all input fields, you may enter "2*pi" for example
- Export to clipboard as metafile
- Zoom function.
- Coordinate window shows mouse position and function value.
- Multiple functions in one plot window.
New features in Version 3.0:
- Improved user interface
- Colored curves
- Variables
New features in Version 2.1:
- Automatic bracket completion
- Numeric integration
What the press says about DB Calc for Windows:
ZD Net Deutschland: 5 of 5 stars for version 1.0!
Chip online: 4 of 5 points (version 2.1)
Download:
32-bit version (version 3.0) Buy at
for $15
Note: You can also register the german version. The key code you receive will be valid for the english version as well as for the german version.