Xem 1-20 trên 308 kết quả Computing fundamentals
  • Lecture Discovering computers fundamentals - Chapter 1 include objectives: Explain why computer literacy is vital to success in today's world, describe the five components of a computer, discuss the advantages and disadvantages that users experience when working with computers, discuss the uses of the Internet and World Wide Web,...

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  • Lecture Discovering computers fundamentals - Chapter 2 include objectives: Identify and briefly describe various broadband Internet connections, describe the types of Internet access providers, explain the purpose of a Web browser and identify the components of a Web address, describe how to use a search engine to search for information on the Web,...

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  • Lecture Discovering computers fundamentals - Chapter 3 include objectives overview: Identify the four categories of application software, describe characteristics of a user interface, identify the key features of widely used business programs, identify the key features of widely used graphics and multimedia programs,...

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  • Chapter 4 presented the components in the system unit, described how memory stores data, instructions, and information, and discussed the sequence of operations that occur when a computer executes an instruction. The chapter included a comparison of various microprocessors on the market today.

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  • After you read chapter 8 you should be able to: Discuss the purpose of the components required for successful communications; describe these uses of computer communications: wireless messaging services, wireless Internet access points, cybercafés, global positioning systems, collaboration, groupware, voice mail, and Web services; differentiate among types of networks: LANs, MANs, and WANs;...

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  • After you read this chapter you should be able to: Describe various types of network attacks, and identify ways to safeguard against these attacks, including firewalls and intrusion detection software; discuss techniques to prevent unauthorized computer access and use; identify safeguards against hardware theft and vandalism;...

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  • This book is an introduction to computer science. Computer science is the study of computer hardware, algorithms, and data structures and how they fit together to provide information systems. Each of these topics can be studied at various levels. For example, physicists study the properties of matter that allow hardware components to be designed, electrical engineers study how the components can be combined to produce circuits, and computer engineers study how circuits can be combined to produce computers.

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  • After you read this chapter you should be able to: Discuss the importance of project management, feasibility assessment, documentation, and data and information gathering techniques; discuss the purpose of each system development phase; differentiate between lowlevel languages and procedural languages;...

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  • Introduction to Computing: Lecture 1 - Fundamental Concepts includes Computer History, Analogue Computers, First Digital Computers, Today’s Computers, Computer Generations, Digital Computer, Binary Arithmetic Operations, Octal and Hexadecimal Numbers, Number systems.

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  • In this chapter, you learn what is input and output devices. The keyboard is presented and different keyboard types are described. You are introduced to various pointing devices, such as the mouse, trackball, touchpad, pointing stick, joystick, touchscreen, and pen input. Scanners and reading devices, including optical scanners, optical readers, magnetic ink character recognition readers, and data collection devices are explained,...

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  • This chapter explains various storage media and storage devices. Students discover how memory is different from storage. Floppy disks are introduced, and characteristics of a floppy disk, floppy disk drives, care of floppy disks, and high-capacity floppy disks are presented. Hard disks are explained, and students find out about characteristics of a hard disk, how a hard disk works, removable hard disks, hard disk controllers, RAID, and maintaining data on a hard disk.

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  • This chapter defines system software and discusses two types of system software: operating systems and utility programs. You learn what an operating system is and explore user interfaces, operating systems features, and operating system functions.

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  • Objectives overview of chapter 9: Define the term, database, and explain how a database interacts with data and information; Describe the qualities of valuable information; discuss the terms character, field, record, and file; describe file maintenance techniques (adding records, modifying records, deleting records) and validation techniques;...

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  • After you read this chapter you should be able to: Discuss the special information requirements of an enterprise-sized corporation; identify information systems and software used in the functional units of an enterprise; describe and list general purpose and integrated information systems used throughout an enterprise;...

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  • Introduction to Computing: Lecture 2 - Dr. Pham Tran Vu presents about Data Representation, Character & Numeric Codes, ASCII Character Set, Structure of Main Memory, Internal Numbers, Representation of Signed Integers, Arithmetic Operations, Computer logic.

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  • Java(TM) Network Programming and Distributed Computing is an accessible introduction to the changing face of networking theory, Java(TM) technology, and the fundamental elements of the Java networking API. With the explosive growth of the Internet, Web applications, and Web services, the majority of today's programs and applications require some form of networking. Because it was created with extensive networking features, the Java programming language is uniquely suited for network programming and distributed computing....

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  • Computer technology has made incredible progress in the past half century. In 1945, there were no stored-program computers. Today, a few thousand dollars will purchase a personal computer that has more performance, more main memory, and more disk storage than a computer bought in 1965 for $1 million. This rapid rate of improvement has come both from advances in the technology used to build computers and from innovation in computer design. While technological improvements have been fairly steady, progress arising from better computer architectures has been much less consistent.

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  • Internetworking---the communication between two or more networks---encompasses every aspect of connecting computers together. Internetworks have grown to support vastly disparate end-system communication requirements. An internetwork requires many protocols and features to permit scalability and manageability without constant manual intervention. Large internetworks can consist of the following three distinct components:

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  • The world of IT is always evolving, but in every area there are stable, core concepts that anyone just setting out needed to know last year, needs to know this year, and will still need to know next year. The purpose of the Foundations series is to identify these concepts and present them in a way that gives you the strongest possible starting point, no matter what your endeavor. Network Security Foundations provides essential knowledge about the principles and techniques used to protect computers and networks from hackers, viruses, and other threats.

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  • This book is intended for students in computer engineering, computer science,and electrical engineering. The material covered in the book is suitable for a onesemester course on “Computer Organization & Assembly Language” and a onesemester course on “Computer Architecture.” The book assumes that students studying computer organization and/or computer architecture must have had exposure to a basic course on digital logic design and an introductory course onhigh-level computer language.

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