Links

Note: This collection is fairly outdated by now. Also note that my China page has a separate collection of links.

Computer Programming

• Programming Ruby (free online version of a book, old but still useful)
• Programming in Standard ML (free book on SML)
• Structure and Interpretation of Computer Programs (programming book based on Scheme)
• Haskell (purely functional programming language)
• Fabrice Bellard's website (including TCC, the Tiny C Compiler)
• What Every Computer Scientist Should Know About Floating-Point Arithmetic
• IEEE Standard 754 Floating Point Numbers (quick reference)
• LZW Data Compression (article from Dr Dobb's Journal, 1989)
• OProfile (the profiler I normally use)
• Little Smalltalk (with slight modifications by me in order to compile on a modern system)
• uClibc (small C library)
• Flat Assembler (x86 and amd64 assembler)
• DOS/BIOS interrupt tables
• Paul Hsieh's x86 page
• Bit Twiddling Hacks (many useful low-level hacks)
• How to optimize for the Pentium family of microprocessor
• Intel 64 and IA-32 Architectures Software Developer's Manuals
• ForthFreak (wiki site about the Forth programming language)
• Publications by Bradford J. Rodriguez (older Forth material)
• Build Your Own Forth
• Chuck Moore's website (the creator of Forth)
• Forth Information on Taygeta
• UltraTechnology (Forth site by Jeff Fox)
• Version Control with Subversion
• A Memory Allocator (Doug Lea)
• The Error Correcting Codes (ECC) Page
• Turbo Codes
• A Tutorial on Convolutional Coding with Viterbi Decoding
• Nils Weller's C Compiler
• GNU MP (arbitrary precision library)
• Bob Jenkin's Web Site (particularly hashing and pseudorandom number generators)
• Numerical Recipes in C
• Mersenne Twister Home Page (pseudorandom number generator)
• MPI Tutorial (parallel programming)
• Advanced Bash-Scripting Guide
• POSIX Threads Programming
• Gnuplot Summary (short but useful to get started)

General Computing

• The Linux Bootdisk HOWTO
• Getting Started with LaTeX
• Hypertext Help with LaTeX
• Iptables Tutorial
• Porting applications to IPv6 HOWTO
• Linux IPv6 HOWTO
• XName (free DNS services)
• RollerNet (free DNS and mail services)

Old Computers

• VICE (emulator of various Commodore computers)
• The Fridge (Commodore code archive, including the C=Hacking magazine)
• All About Your C64 (reference material)
• FairLight (Commodore 64 tools and information)
• 6502.org (various 6502 projects and documents)
• 6502 Instruction Reference
• 6502 family instruction reference
• Mapping The C64 (reference material)
• PET Documentation
• svicc (vi clone for C64)
• ACME (6502 cross-assembler)
• The Manchester Small Scale Experimental Machine
• The Transistor Computer (that is, the first of its kind)
• Computers in Spaceflight: The NASA Experience
• Apollo Guidance Computer Schematics
• Computer Conservation Society
• PDP-1 Handbook
• PDP-8 website
• z80.info (all about the Z80 microprocessor)
• LGP-30 manual
• C64 Information
• C64 Tape Collection

Digital Electronics

• The KimKlone project
• The Simplex III Computer
• The Alice II Computer
• The Chaos Computer
• WDR 1-bit Computer
• Interfacing the IBM PC Parallel Printer Port
• Interfacing the AT keyboard
• AT Keyboard Interface for Microchip PIC16F84
• Everything about the VT100 family
• AVR Freaks (all about Atmel's microcontoller family)
• PIC Programmers
• GNUPIC (free PIC tools)
• Play-Hookey

Analog Electronics

• Harry's Homebrew Homepage (lots and lots of radio-related projects)
• Circuits Archive
• The Scientist and Engineer's Guide to Digital Signal Processing (free online book)
• Circuit Exchange International
• FC's Circuit Archive
• 555 circuit archive
• Electronics Tutorials
• Electron Tube Data Sheets
• The Unusual Diode FAQ
• Bizarre stuff you can make in your kitchen
• Spark, Bang, Buzz and Other Good Stuff
• Characteristics of B,G/PAL and M/NTSC television systems
• Mister Transistor's Historic Semiconductors
• K3PGP's website (many cool projects in radio, light and astronomy)
• Mouser (good electronics supplier)
• Futurlec (good electronics supplier)
• Various Timer Circuits
• High Altitude Glider Project
• Glowbugs (vacuum tube radios)
• Dave's Homemade Tube Radios (many nice projects)
• Regenerative and Reflex Receivers (old but good article, using vacuum tubes)
• The Radio Amateur's Handbook (1922)
• The Sounds of a Spark Transmitter: Telegraphy and Telephony
• Receive Loop Preamplifier
• Class E Amplifiers
• JF1OZL's projects
• VK2ZAY's projects
• AA3SJ's projects
• KE3IJ's projects
• The ROSE 80 CW Transceiver
• 6MHz SSB Transceiver (VU3PRX)
• Build a 5 Watt 40 Meter Transmitter (N1HFX)
• Grenade QRP Transmitter
• DK8KW's Longwave Information site
• Links about the 136kHz band
• Crystal Radio Circuits
• Hans Summers's projects
• Schematics from the ARRL Handbook (1957)
• Rod's Radio Pages
• Adversary Agent Radios
• Magnetic Loop Antenna
• Microwaves 101 (odd but interesting)
• Receiver Building Blocks
• Sine Wave Oscillators
• A High Speed Digital Backbone Radio Link (via microwave)
• An Experimental 10-Mbit/s Microwave Data Link
• Crystal Oscillators
• Communicating by Light
• Jon's Electronic Projects
• Stepping Motor Control Circuits
• ON6MU's QRP 10m AM/CW transmitter
• One Transistor TRF Regenerative RX
• XBM80-2 -- An Experimental 80m CW Transceiver

Mathematics and Logic

• Textbooks in Mathematics
• MathWorld
• The Burning Ship Fractal
• The ECMNET Project
• The Great Internet Mersenne Prime Serch
• Multivariable Calculus Online
• FFT Link Collection
• Handbook of Applied Cryptography
• Calculators and the Gamma Function (various approximations)
• Octave (free Matlab clone)
• Logic for Computer Science: Foundations of Automatic Theorem Proving (free book)
• Metamath (automated proof verification)
• Sequent Calculus Primer
• Overview of Automated Theorem Provin
• Game of Life

Astronomy

• Astronomy Picture of the Day
• The SAO/NASA Astrophysics Data System
• The Messier Catalog
• Planetary Fact Sheets
• NASA Space Probe Data Archive
• CalSky (sky maps and calculations)
• Ned Wright's Cosmology Tutorial
• John S. French's website
• Amateur Astrophotography
• Solar System Bodies

General Science

• arXiv (articles in various fields)
• IAEA Accident Reports
• NIST Chemistry WebBook (reference data)