15 tutorials on bitwise operations, binary math, and low-level programming — with real code examples
AND, OR, XOR, NOT, and shifts explained in plain English — no CS degree required. Truth tables, binary visuals, and your first bitwise program.
How & works at the bit level, with practical examples: permission systems, subnet masking, and extracting bit fields from packed data.
OR sets bits without disturbing others. XOR toggles and encrypts. Learn both with C and Python examples you can run right now.
Why n << 3 is faster than n * 8. Arithmetic vs logical shifts, sign extension, and real use cases in graphics and compression.
The most confusing bitwise operator, explained. How two's complement represents negative numbers and why NOT behaves the way it does.
How operating systems, game engines, and network protocols pack configuration into single integers. Save memory and write cleaner APIs.
Swap without a temp variable, check if a number is a power of two, count set bits, reverse bits — tricks from the bit-twiddling cookbook.
Complete reference for C bitwise operators with embedded systems examples: register manipulation, GPIO control, and interrupt flag handling.
Python's arbitrary-precision integers make bitwise ops surprisingly powerful. Examples for flags, bit arrays, and performance optimization.
JS converts numbers to 32-bit signed integers for bitwise ops. What this means, when it bites you, and how to use BigInt for 64-bit operations.
From file permissions and CSS color parsing to chess engines and CRC checksums — bitwise operations are hiding in plain sight.
Bits, bytes, nibbles, and words explained from scratch. Positional notation, binary counting, and why 1024 shows up everywhere.
0xFF is easier to read than 0b11111111. How hex maps to binary, common hex patterns, and every place you'll encounter it in code.
Bitwise instructions execute in a single clock cycle. How ALUs work, why shifts are cheaper than multiplication, and what the compiler actually generates.
FAANG loves bitwise problems. Single number, counting bits, power of two, reverse bits, and more — with step-by-step solutions in multiple languages.