计算机应用基础(双语)Chapter-01课件

What is a computer?
• An operating system is software that helps a computer operate efficiently and keep track of data
• Application software helps users “apply” computers to specific tasks
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计算机应用基础(双语)课件PPTChapter-01
How are computers classified?
• A personal computer is designed to meet the computing needs of an individual
• Desktop computers fit on desks and run on power from wall outlets
• Most takes place in central processing unit (CPU), a computer’s “brain” • Computer programs are instructions that tell computers how to process
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计算机应用基础(双语)课件PPTChapter-01
• A server is used to serve data to computers connected to a network
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计算机应用基础(双语)课件PPTChapter-01
How are computers classified?
• A mainframe computer is capable of simultaneously processing data for hundreds or thousands of users
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计算机应用基础(双语)课件PPTChapter-01
How are computers classified?
• Handheld computer (PDA) features include:
• Small keyboard or touch-sensitive screen • Designed to fit in your pocket • Runs on batteries • Used while holding it
Chapter 1
Computer Hardware
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What’s inside?
• In this chapter, you will: • Gain an overview of computer equipment and terminology • Learn how computers are classified • Learn how personal computers fit into the gamut of machines from PDAs to supercomputers • Review basic components of a typical personal computer system • Look inside the system unit • Explore advantages and disadvantages of several computer storage devices • Learn some basics about maintaining your computer and troubleshooting problems
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计算机应用基础(双语)课件PPTChapter-01
What is a computer?
• A device that:
• Accepts input • Processes data • Stores data • Produces output
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计算机应用基础(双语)课件PPTChapter-01
• Memory is temporary storage • Storage is permanent • Computer output is results produced by computer
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计算机应用基础(双语)课件PPTChapter-01
What is a computer?
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计算机应用基础(双语)课件PPTChapter-01
How are computers classified?
• Computers are divided into five categories:
• Handheld computers • Personal computers • Servers • Mainframe computers • Supercomputers
• A supercomputer is one of the fastest computers in the world and can tackle complex tasks
What is a computer?
• Computer input is whatever is typed, submitted, or transmitted to a computer system
• Data refers to symbols that represent facts, objects, and ideas • Processing is manipulation of data
• A Notebook computer (laptop) incorporates screen, keyboard, storage, and processing
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计算机应用基础(双语)课件PPTChapter-01
How are computers classified?
• A tablet computer is portable, featuring a touch-sensitive screen used for writing or drawing