计算机系统概述.ppt
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The series of instructions that tell a computer how to carry out processing tasks is referred as a computer program.
In a computer , most processing takes place in a component called the central processing unit(CPU).
1.1 定义计算机
• A computer stores data Memory is an area of a computer that temporarily holds data that is waiting to be processed, stored, or output.
Storage is the area where data can be left on a permanent basis when it is not immediately needed for processing.
To process large amounts of data, mainframes process billions of instructions per second and often include several central processing units.
Mainframes are large, fast, and fairly expensive computers, generally used by business or government to provide centralized storage, processing ,and management for large amounts of data.
a COMPUTER is a device that accepts input, processes data, stores data , and produces output,
all according to a series of stored instructions.
1.1 定义计算机
桌面微型计算机 笔记本电脑 个人数字助理PDA
1.2 认识计算机 – 计算机分类1
• Minicomputer A minicomputer is more powerful than a
microcomputer and can carry out tasks for several people working at terminals that are connected to the minicomputer.
输入设备 输出设备 外存储器
外
部
主存储器
运算器
接
口
控制器
设
备
外部设备
主机
图1 计算机的基本结构
1.1 定义计算机
• A Computer accepts Input Computer Input is whatever is put into a computer system.
An input device, such as a keyboard、mouse、 scanner or digital camera, gathers input and transforms it into a series of electronic signals for the computer.
A terminal is an input and output device , it has a keyboard and screen. A terminal, however, does not have processing capability.
1.2 认识计算机 – 计算机分类1
• Mainframe computer
• Microcomputer(微型机) • Minicomputer（小型机） • Mainframe computer（大型机） • Supercomputer（巨型机）
1.2 认识计算机 – 计算机分类1
• Microcomputer also known as personal computers,are typically found in home and small businesses. Its CPU consisted of a single “chip” called a microprocessor.
1.1 定义计算机
• Aut Output is the results produced by a computer. An output device displays ,prints, or transmits the results of processing. Computers produce output on devices such as screens and printers.
Chapter1 计算机系统概述
• 1.1 定义计算机 • 1.2 认识计算机 • 1.3 用户界面 • 1.4 Internet基础 • 1.5 电子邮件基础 • 1.6 计算机学科与知识领域
Information Web QuickCheck
1.1 定义计算机
• What is a computer?
1.1 定义计算机
• A computer processes data Data Refers to the symbols that represent facts, objects, and ideas.
Computers manipulates data in many ways, and we call this manipulation processing.
1.2 认识计算机
• Categories of computers(1) • Categories of computers(2) • Computer system unit • Microcomputer compatibility • Peripheral device(外围设备)
1.2 认识计算机 – 计算机分类1
In a computer , most processing takes place in a component called the central processing unit(CPU).
1.1 定义计算机
• A computer stores data Memory is an area of a computer that temporarily holds data that is waiting to be processed, stored, or output.
Storage is the area where data can be left on a permanent basis when it is not immediately needed for processing.
To process large amounts of data, mainframes process billions of instructions per second and often include several central processing units.
Mainframes are large, fast, and fairly expensive computers, generally used by business or government to provide centralized storage, processing ,and management for large amounts of data.
a COMPUTER is a device that accepts input, processes data, stores data , and produces output,
all according to a series of stored instructions.
1.1 定义计算机
桌面微型计算机 笔记本电脑 个人数字助理PDA
1.2 认识计算机 – 计算机分类1
• Minicomputer A minicomputer is more powerful than a
microcomputer and can carry out tasks for several people working at terminals that are connected to the minicomputer.
输入设备 输出设备 外存储器
外
部
主存储器
运算器
接
口
控制器
设
备
外部设备
主机
图1 计算机的基本结构
1.1 定义计算机
• A Computer accepts Input Computer Input is whatever is put into a computer system.
An input device, such as a keyboard、mouse、 scanner or digital camera, gathers input and transforms it into a series of electronic signals for the computer.
A terminal is an input and output device , it has a keyboard and screen. A terminal, however, does not have processing capability.
1.2 认识计算机 – 计算机分类1
• Mainframe computer
• Microcomputer(微型机) • Minicomputer（小型机） • Mainframe computer（大型机） • Supercomputer（巨型机）
1.2 认识计算机 – 计算机分类1
• Microcomputer also known as personal computers,are typically found in home and small businesses. Its CPU consisted of a single “chip” called a microprocessor.
1.1 定义计算机
• Aut Output is the results produced by a computer. An output device displays ,prints, or transmits the results of processing. Computers produce output on devices such as screens and printers.
Chapter1 计算机系统概述
• 1.1 定义计算机 • 1.2 认识计算机 • 1.3 用户界面 • 1.4 Internet基础 • 1.5 电子邮件基础 • 1.6 计算机学科与知识领域
Information Web QuickCheck
1.1 定义计算机
• What is a computer?
1.1 定义计算机
• A computer processes data Data Refers to the symbols that represent facts, objects, and ideas.
Computers manipulates data in many ways, and we call this manipulation processing.
1.2 认识计算机
• Categories of computers(1) • Categories of computers(2) • Computer system unit • Microcomputer compatibility • Peripheral device(外围设备)
1.2 认识计算机 – 计算机分类1