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An approachable, hands-on guide to understanding how computers work, from low-level circuits to high-level code. How Computers Really Work is a hands-on guide to the computing ecosystem: everything from circuits to memory and clock signals, machine code, programming languages, operating systems, and the internet. But you won't just read about these concepts, you'll test your knowledge with exercises, and practice what you learn with 41 optional hands-on projects. Build digital circuits, craft a guessing game, convert decimal numbers to binary, examine virtual memory usage, run your own web server, and more. Explore concepts like how to: Think like a software engineer as you use data to describe a real world concept Use Ohm's and Kirchhoff's laws to analyze an electrical circuit Think like a computer as you practice binary addition and execute a program in your mind, step-by-step The book's projects will have you translate your learning into action, as you: Learn how to use a multimeter to measure resistance, current, and voltage Build a half adder to see how logical operations in hardware can be combined to perform useful functions Write a program in assembly language, then examine the resulting machine code Learn to use a debugger, disassemble code, and hack a program to change its behavior without changing the source code Use a port scanner to see which internet ports your computer has open Run your own server and get a solid crash course on how the web works And since a picture is worth a thousand bytes, chapters are filled with detailed diagrams and illustrations to help clarify technical complexities. Requirements: The projects require a variety of hardware - electronics projects need a breadboard, power supply, and various circuit components; software projects are performed on a Raspberry Pi. Appendix B contains a complete list. Even if you skip the projects, the book's major concepts are clearly presented in the main text.
If you want to learn computer programming but don’t know which language to start with, this is the book for you! In just 24 lessons of one hour or less, any beginner can get a solid introduction to the basics of computer programming and learn to write simple programs for any platform—Windows, Mac, and mobile. Using a straightforward, step-by-step approach, each lesson in this carefully crafted tutorial builds upon the previous one, allowing you to learn all the essentials of programming from the ground up. Once you’ve mastered these fundamentals, the book introduces you to several of the most popular computer programming languages today and helps you decide which language to learn first. Step-by-step instructions carefully walk you through the most common programming tasks. Practical, hands-on examples show you how to apply what you learn to create your own programs Quizzes and exercises at the end of each lesson help you test your knowledge and stretch your skills Learn how to… Set up your programming toolkit with widely available free downloads Create simple programs in JavaScript that get user input and display output Process numbers and words Use variables to hold information Merge strings together Tell programs how to make decisions Create algorithms to count data values and accumulate totals Use JavaScript to create interactive web pages Improve a user’s experience with cookies Debug your programs before going live Structure programs for readability Apply your programming skills to more advanced languages like Java Use object-oriented programming techniques Choose between other popular languages like C and C++, HTML5 and CSS3, Visual Basic and .NET, and PHP Distribute and sell your programs
The term digital divide is still used regularly to characterize the injustice associated with inequalities in access to information and communication technologies (ICTs). As the debate continues and becomes more sophisticated, more and more aspects of the distribution of ICTs are singled out as relevant to characterizations of the digital divide and of its moral status. The best way to articulate the digital divide is to relate it to other aspects of social and distributive justice, using a mixture of pre-existing theories within moral and political philosophy. These theories are complemented with contributions from sociology, communication studies, information systems, and a range of other disciplines. Information Technology and Social Justice presents conceptual frameworks for understanding and tackling digital divides. It includes information on access and skills, access and motivation, and other various levels of access. It also presents a detailed analysis of the benefits and value of access to ICTs.
Here is an invaluable book that provides you with a comprehensive introduction and exploration of the present and future issues of computer use in occupational therapy. This practical book will serve as a resource--to the novice, the experienced, and the student--regarding the often overwhelming world of microcomputer use in your profession. Computer Applications in Occupational Therapy will serve as your source of answers to the questions you may have regarding the often overwhelming world of microcomputer usage in your field. Occupational therapy professionals explore such topics as the impact of this new technology on rehabilitation, robotics and the disabled, and the computer as an administrative tool and as an educational tool. With this practical guide, you can learn how to best use the computer for your specific needs and avoid the pitfalls that many encounter when first using the computer.