Chapter 1: A Conversation with a Close Friend
Chapter 2 Signs and Combinations
Chapter 3 Braille and Binary Code
Chapter 4 Let's Disassemble the Light Bulb
Chapter 5: Talking at Close Range
Chapter 6 Logic and Switches
Chapter 7 Telegraph and Relay
Chapter 8 Relays and Logic Gates
Chapter 9 Ten Numbers We Use
Chapter 10 Non-Decimal Numbers
Chapter 11 Bit, Bit, Bit
Chapter 12 Bytes and Hexadecimal
Chapter 13 From ASCII to Unicode
Chapter 14 Addition with Logic Gates
Chapter 15 Is that really true?
Chapter 16 So what about subtraction?
Chapter 17 Feedback and Flip-Flops
Chapter 18 Let's Make a Clock
Chapter 19 Let's Create Memory
Chapter 20 Automating Operations
Chapter 21 Arithmetic Logic Unit
Chapter 22 Registers and Buses
Chapter 23 CPU Control Signals
Chapter 24 Loops, Branches, and Calls
Chapter 25 Peripherals
Chapter 26 Operating Systems
Chapter 27 Coding
Chapter 28 World Brain

Computers are now embedded not only in laptops and smartphones, but also in many smart products, including cars, televisions, microwave ovens, alarm clocks, and robot vacuum cleaners.
What happens inside these devices that make our lives easier, yet sometimes frustrating? CODE, a must-read in computer science for over 20 years, has been re-released and updated for the new computing era.
This book, which contains the secret stories inside computers, solves the mysteries of computers through well-organized illustrations and easy-to-understand explanations.
Through flashlights, black cats, seesaws, and Paul Revere's running, you can learn about computing and see how human ingenuity and the drive to communicate have influenced every electronic device we use today.

In this revised edition, we delve into the heart of every smart device—the central processing unit, built to combine simple basic operations to perform the most complex tasks, down to the bits and gates.
Additionally, the author has created CodeHiddenLanguage.com, a website that complements the book's content, providing graphical animations of the operation of key circuits featured in the book, making them easier to understand.
From the simple tick of a clock to the hum of the global internet, this book reveals the essence of the digital revolution.
This revised edition contains many revisions to the original content and includes the following new chapters:

Chapter 18: Let's Make a Clock
Chapter 21 Arithmetic Logic Unit
Chapter 22 Registers and Buses
Chapter 23 CPU Control Signals
Chapter 24 Jumps, Loops, and Calls
Chapter 28: World Brain