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This book introduces the concepts of how computer hardware works from a programmer’s point of view. A programmer’s job is to design a sequence of instructions that will cause the hardware to perform operations that solve a problem. This book looks at these instructions by exploring how C/C++ language constructs are implemented at the instruction set architecture level.
The specific architecture presented in this book is the ARM® as implemented on the Raspberry Pi®. The operating system is Raspbian, which is based on a Linux kernel and includes a GNU programming environment.
The basic guidelines I followed in creating this book are:
Understanding how the hardware works helps you to become a better programmer.
Learning is easier if it builds upon concepts you already know.
“Real world” hardware and software make a more interesting platform for learning theoretical concepts.
The tools used for teaching should be inexpensive and readily available.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.