read Code: The Hidden Language of Computer Hardware and Software

• 1. Best Friends
• 2. Codes and Combinations
• 3. Braille and Binary Codes
• 4. Anatomy of a Flashlight
• 5. Communicating Around Corners
• 6. Logic with Switches
• 7. Telegraphs and Relays
• 8. Relays and Gates
• 9. Our Ten Digits
• 10. Alternatives 10s
• 11. Bit by Bit by Bit
• 12. Bytes and Hexadecimal
• 13. From ASCII to Unicode
• 14. Adding with Logic Gates
• 15. Is This for Real?
• 16. But What About Subtraction?
• 17. Feedback and Flip-Flops
• 18. Let's Build a Clock!
• 19. An Assemblage of Memory
• 20. Automating Arithmetic
• 21. The Arithmetic Logic Unit
• 22. Registers and Buses
• 23. CPU Control Signals
• 24. Loops, Jumps, and Calls
• 25. Peripherals
• 26. The Operating System
• 27. Coding
• 28. The World Brain