SciCalc Version History
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Version 1.0.4
May 20, 2026
Circle & Sphere Calculators
- Added circle calculator with direct and interactive modes
- Direct mode:
circle(r=5), circle(d=10), circle(c=31.416), circle(a=78.54)
- Interactive mode: type
circle + ENTER, then enter the known quantity (r, d, c, or a)
- Added sphere calculator with direct and interactive modes
- Direct mode:
sphere(r=5), sphere(d=10), sphere(c=31.416), sphere(a=314.16), sphere(v=523.6)
- Interactive mode: type
sphere + ENTER, then enter the known quantity (r, d, c, a, or v)
- Both calculators display all derived quantities (radius, diameter, circumference, area, and volume for sphere)
- Created circle-calculator.html and sphere-calculator.html pages
Version 1.0.3
January 13, 2026
Unit Converter
- Added comprehensive unit conversion system with 10 categories
- Supported categories: length, mass, volume, temperature, time, speed, area, energy, pressure, data
- Conversion syntax:
5_kg → lb converts 5 kilograms to pounds
- Unit arithmetic:
5_km + 3_mi → km adds and converts units
- Keyboard shortcuts: ALPHA+SPC types underscore, ALPHA+0 types arrow
- Created unit-converter.html documentation page
Version 1.0.2
November - December 2025
Complex Numbers & Improvements
- Full complex number support with arithmetic (+, -, *, /), power, sqrt, trig, log
- Input formats:
3+2i, (3,4) rectangular, (5;45) polar
- Helper functions:
re(), im(), mag(), arg(), conj()
sqrt(-1) now returns i instead of NaN- Fixed polar notation parsing for expressions like
(2;90)
- Added comma as shifted 0 key for rectangular notation
- Semicolon support in function arguments (European notation)
- Changed multiplication display from * to multiplication sign
- Added robots.txt for SEO
Version 1.0.1
November 2025
PWA Enhancements & Bug Fixes
- Automatic parentheses completion when pressing ENTER
- Integrated high-quality PNG icons (48x48 through 512x512)
- Fixed iOS PWA touch event issues (FIX button, digit double-entry)
- Added About/Contact page with PHP support and CAPTCHA
- Created favicon and PWA icons
- SEO improvements with canonical URLs and Google Analytics
Version 1.0.0
November 2025
Initial Release
- HP48G-inspired scientific calculator design
- Full PWA support with offline functionality
- Graphing capabilities with Chart.js integration
- Scientific functions: trigonometry, logarithms, powers, factorial
- Fraction operations:
pfac, gcd, frac
- BMI calculator with interactive mode
- Variable storage with localStorage persistence
- Sound effects with toggle
- Adjustable screen brightness
- Embeddable calculator component
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