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MacPaint Source Code: A Deep Dive into a 128KB Painting Revolution

2025-04-05

This article delves into the source code of MacPaint, a groundbreaking painting program released in 1984 alongside the original Macintosh. It revolutionized personal computing by introducing intuitive mouse-driven controls and innovative features. The analysis covers MacPaint's algorithms, code architecture, and performance optimizations, highlighting clever techniques leveraging the 68k platform, such as efficient buffer management and a seed-fill algorithm. The article also explores MacPaint's impact on digital graphics and the competitive landscape it faced.

Programming Lewis Carroll's *Memoria Technica*

2024-12-27

This article explores Lewis Carroll's *Memoria Technica*, a cipher he devised to aid in remembering numbers. The cipher maps consonants to digits, ignoring vowels and punctuation. The article describes the cipher's mechanics, presents online tools for encoding and decoding, and discusses its potential use in steganography. The authors detail their TypeScript implementation, highlighting optimizations for efficiency. Examples illustrate encoding and decoding, and the article analyzes the cipher's strengths and weaknesses as a steganographic technique, including a potential vulnerability related to letter and digit frequency discrepancies.