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Prime Number Spiral

Prime Number Spiral 9.00 updated

The Prime Number Spiral (a.k.a. the Ulam Spiral) is constructed as follows: Consider a rectangular grid. We start with the central point and arrange the positive integers in a spiral fashion (anticlockwise). The prime numbers are then marked. There is a...

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Quick Conversion

Quick Conversion 10.3 updated

Lite version converts several units of length. Plus version converts length, weight and capacity measures. By typing a number into box provided will instantly display the results without the user having to search through a confusing menu of choices. Great...

Chinese Calendrics

Chinese Calendrics 14.52 updated

A program to convert between dates in Chinese, Vietnamese and Japanese lunar calendars and dates in the Gregorian and Julian calendars, and to find lunar new year's day and leap months for any year in the Asian calendars. Can list anniversaries of lunar...

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Wplot

Wplot 1.21

wplot is a quick and easy to use Windows GUI software program for quickly creating and analyzing data plots. Create plots with millions of data points in seconds. Crazy fast. Once the data is plotted you can easily use the many tools to explore...