книга Technology In Action Complete, 16th Edition

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Technology In Action Complete, 16th Edition

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Название: Technology In Action Complete, 16th Edition
Автор: Alan Evans, Jonathan Weyers
Страниц: 625
Формат: PDF
Размер: 69.7 MB
Качество: Отличное
Язык: Английский
Год издания: 2019

 Using technology to teach technology. Best-selling Technology in Action Complete uses practical content and hands-on projects to engage students in computing tasks and skills they can apply at work, in class, or at home. Designed for today’s technically savvy students, the text introduces difficult concepts at a basic level early on, then expands upon these skills as students build mastery. The 16th edition further emphasizes the importance of digital literacy with two new Try This projects – “What Does Facebook Know About You?” and “Sharing Printers on a Network Using Windows” – as well as a new Technology in the News feature providing weekly currency updates online.

What is software? Technically speaking, the term software refers to a set of instructions that tells the computer what to do. An instruction set, also called a program, provides a means for us to interact with and use the computer, even if we lack specialized programming skills. What is the difference between application and system software? Your computer has two main types of software. Application software is the software you use to do tasks at home, school, and work. System software is software that helps run the computer and coordinate instructions between application software and the computer’s hardware devices. System software includes the operating system (such as Windows, Linux and macOS) and utility programs (programs in the operating system that help manage system resources). Other types of software, such as web browsers, virus protection, and backup and recovery software, are used every day. We’ll discuss these types of software elsewhere in this book.

What languages do programmers use if the problem requires a lot of “number crunching”? A Windows application that demands raw processing power to execute difficult, repetitive numerical calculations is most often a candidate for C/C++. For example, applications that simulate human cells and drug interactions have to solve elaborate mathematical equations many thousands of times each second and are, therefore, excellent candidates for programming using C/C++. Several companies sell C/C++ design tools equipped with an environment that makes Windows programming as visual as with VB.

Can a Java application work on any type of computer? An attractive feature of Java is that it’s architecture neutral. This means that Java code needs to be compiled only once, after which it can run on many CPUs. The Java program doesn’t care which CPU, OS, or user interface is running on the machine on which it lands. This is possible because the target computer runs a Java Virtual Machine (VM), software that can explain to the Java program how to function on any specific system. A Java VM installed with Microsoft Edge, for example, allows Edge to execute any Java applet (small Java-based program) it encounters on the Internet. Although Java code doesn’t perform as fast as C++, the advantage of needing to compile only once before a program can be distributed to any system is extremely important.


1 The Impact of Technology in a Changing World ............ 2
2 Looking at Computers: Understanding the Parts ............. 36
3 Using the Internet: Making the Most of the Web’s Resources ................ 80
4 Application Software: Programs That Let You Work and Play ............... 120
5 System Software: The Operating System, Utility Programs, and File Management ................. 158
6 Understanding and Assessing Hardware: Evaluating Your System ............... 198
7 Networking: Connecting Computing Devices ............... 240
8 Managing Your Digital Lifestyle: Challenges and Ethics .............. 272
9 Securing Your System: Protecting Your Digital Data and Devices ............... 322
10 Behind the Scenes: Software Programming ............. 368
11 Behind the Scenes: Databases and Information Systems ............. 412
12 Behind the Scenes: Networking and Security in the Business World ............. 456
13 Behind the Scenes: How the Internet Works ........ 498
Appendix A
The History of the Personal Computer ..........A-1
Appendix B
Careers in IT ........B-1
Glossary....... G-1
Index....... I-1

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