They are not intended to show how JavaScript applications should be written. I wrote them for my own amusement and education.
These calculators are NOT in the Public Domain - I spent many hours writing them and the copyright belongs to me. However, if you would like to use any of these calculators on your own website for non-profit-making purposes, feel free to do so but please let me know and give my site a mention. Thanks. My views on copyright
Amateur Radio and Audio
- Antenna EiRP calculator Calculate Antenna & Cable losses.
- Antenna Trap Designer HF- Antenna trap design. (Not for IE 3).
- Audio Filter Designer Calculate component values for active audio filters.
- Colour-Code calculator for Polyester capacitors
- Coil Winding Design Winding coils in amateur radio.
- Crystal Selector A calculator to select crystal frequencies
for PMR radios.
- Decibels Decibel calculator.
- Great Circles Calculate Great Circle Distances.
- HF Filter Designer Calculates component values for HF filters.
- Latitude/Longitude calculator Amateur Radio calculator.
- Metric Converter Convert metric/imperial units.
- Morse Code Morse Code/Text Converter.
- Op-Amp Circuit Designer Design inverting, non-inverting and differential op-amp circuits.
- QRA Calculator Amateur radio Locator system.
- QRA - Lat-Long and Lat-Long to QRA Combined calculator.
- Radio Horizon Calculator Distance to the horizon for a given height.
- Resistor colour-code calculator
- Resistor colour-code calculator - second version.
- RIAA Curve Designer Magnetic Pickup Equalization (Not for IE 3).
- Simple Amateur Satellite Calculator
- Standing Wave Ratio from forward and reflected power.
- 555 Timer Calculate Resistor, Capacitor or Time values for the 555 timer
- TVI Tracer Answer the questions to track down TVI.
- World Clock A universal World Clock (works with most browsers but not all).
- Zener Diodes Calculate power ratings for zener circuits.
[Download hamcalc-chm.zip]
Games
- Picture PuzzleJigsaw puzzle.
- Asteroid Attack Steer your ship around the asteroids (IE version).
- Asteroid Attack Netscape version.
- Checkers Simple checkers (draughts) game (Not for IE 3).
- Fifteen The 'classic' 15 puzzle (Netscape only).
- Lunar-Lander The usual thing -- limited fuel and falling fast!
- Lottery Picker Simple Lottery Number Selector
- Lottery Picker II Alternate Lottery Selector without the bonus ball (max number = 40)
- Memory Tester Game to test your memory. (Yawn)
- Memory Puzzle Slightly better game! (Netscape only).
- Numbers Game Game of Nim (Not for IE3).
Others
- Bio-rhythm plotter Find your good days!
- Calorie Calculator Calculate you calorie requirements.
- Colour Palette Selector Nice little utility to convert colours into HTML values.
- HTML Colour Values Displays all the HTML colours and their values.
- Semaphore Silly semaphore animation!
- Window Demo How to open a window in JavaScript
- Mini HTML word processor