计算机专业英语第1章演示
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What is the information processing cycle?
Input Process
Output Communication Storage
11
1.3 The Components of a Computer
What are common computer hardware components? monitor scaner
5
1.1 computer literacy Computers are valuable tools As technology advances and computers extend into every fact of daily living, it is essential you gain some level of computer literacy. To be successful in today’s world, you must have a knowledge and understanding of computers and their uses.
Define the term computer
Identify the components of a computer Explain why a computer is a powerful tool
Discuss the computers in everyday life
2
Computer Competency
• Also called a processor • Carries out instructions that tell
computer what to do
Memory
• Temporary holding place for data
and instructions
16
1.3 The Components of a Computer
What is storage?
Holds data, instructions, and information for future use
Storage Medium
• Physical material
on which data, instructions, and information are stored
23
1.3 The Components of a Computer
What is a communications device?
Establishes a connection between two computers using cable, telephone lines, and satellites One type is a modem
8
1.2 What Is a computer and What does it do ?
Who is a user?
Person who communicates with a computer or uses the information it generates
9
1.2 What Is a computer and What does it do ?
CD-RW drive hard disk drive
19
1.3 The Components of a Computer
What is a floppy disk?
Thin, circular, flexible disk enclosed in rigid plastic A Zip® disk is a higher capacity disk
20
1.3 The Components of a Computer
What is a hard disk?
Provides much greater storage capacity than a floppy disk
பைடு நூலகம்
self-contained hard disk
removable hard disk
第1 章 Introduction to Computers
2014年11月14日星期五
1
第1章 Introduction to
Computer
本章学习目的
Explain why it is important to be computer literate Differentiate among the various types of software Explain the purpose of a network Discuss the uses of the Internet and the World Wide Web Describe the categories of computers and their uses
printer
speaker
System unit
keyboa rd
mouse
PC camera
12
1.3 The Components of a Computer
What is an input device?
Hardware used to enter data and instructions
Storage Device
• Records and retrieves
items to and from a storage medium
18
1.3 The Components of a Computer
What are common storage devices or drives?
CD-ROM or DVD-ROM drive ZIP® drive floppy disk drive
What is miniature storage media?
Portable, thin, credit card size memory Used in digital cameras and handheld computers
Memory card miniature storage media
CD-RW drive
Zip® drive hard disk drive (inside case)
CD-ROM or DVDROM drive
floppy disk drive
15
1.3 The Components of a Computer
What are two main components on the motherboard? Central Processing Unit (CPU)
6
1.2 What Is a computer and What does it do ? How is a computer defined?
Electronic machine operating under the control of instructions stored in its own memory • Accepts data • Manipulates data • Produces results • Stores results
terminology used in environments which utilise computer equipment.
3
Computer Competency
Microcomputer technology has changed the world dramatically. If I think back 20 years ago, very few people had the opportunity to use a computer if they were not a programmer, data-entry person or computer operator. Now nearly everyone has a chance to use a computer either at home or in business.
The purpose of these lectures is to help you become competent in both computer English reading and computer-related skills.
• To understand the basic concepts and
4
1.1 computer literacy Computers are everywhere When you hear the word computer, initially you may think of those found in the workplace-the computers used to create business letters, memos, and other correspondence; calculate payroll; track inventory; or generate invoices.
What is a chip?
Device with microscopic pathways that carry electrical currents Attaches to motherboard
Processor chip
Memory chip
17
1.3 The Components of a Computer
14
1.3 The Components of a Computer
What is the system unit?
Box-like device containing electronic components connected to motherboard Also called a chassis
24
modem
1.4 Computer Software
What makes a computer powerful?
Storage Reliability
Speed
Accuracy
Communications
25
1.4 Computer Software
What is a computer program?
A series of instructions that tells the computer what to do
Public Sub star(ByVal n As Single) Const pi = 3.14159 Randomize m = Int(Rnd * 16) colr = QBColor(m) mFrm.Line (X, Y)-Step(n * Sin(pi / 10), -n * Cos(pi / 10)), colr mFrm.Line -Step(n * Sin(pi / 10), n * Cos(pi / 10)), colr mFrm.Line -Step(-n * Cos(2 * pi / 10), -n * Sin(2 * pi / 10)), colr mFrm.Line -Step(n, 0), colr
7
1.2 What Is a computer and What does it do ? What are data and information?
Data
Raw facts, figures, and symbols
Information
Data that is organized, meaningful, and useful
21
1.3 The Components of a Computer
What is a compact disc?
Portable storage media • CD-ROM • CD-RW • DVD-ROM • DVD+RW
22
1.3 The Components of a Computer
scaner
keyboa rd
mouse PC camera
13
1.3 The Components of a Computer
What is an output device?
Hardware that conveys information to a user
printer
speaker
monitor
What are hardware and software?
Hardware
Electronic and mechanical equipment
Software
Instructions that tell hardware how to perform tasks
10
1.2 What Is a computer and What does it do ?
Input Process
Output Communication Storage
11
1.3 The Components of a Computer
What are common computer hardware components? monitor scaner
5
1.1 computer literacy Computers are valuable tools As technology advances and computers extend into every fact of daily living, it is essential you gain some level of computer literacy. To be successful in today’s world, you must have a knowledge and understanding of computers and their uses.
Define the term computer
Identify the components of a computer Explain why a computer is a powerful tool
Discuss the computers in everyday life
2
Computer Competency
• Also called a processor • Carries out instructions that tell
computer what to do
Memory
• Temporary holding place for data
and instructions
16
1.3 The Components of a Computer
What is storage?
Holds data, instructions, and information for future use
Storage Medium
• Physical material
on which data, instructions, and information are stored
23
1.3 The Components of a Computer
What is a communications device?
Establishes a connection between two computers using cable, telephone lines, and satellites One type is a modem
8
1.2 What Is a computer and What does it do ?
Who is a user?
Person who communicates with a computer or uses the information it generates
9
1.2 What Is a computer and What does it do ?
CD-RW drive hard disk drive
19
1.3 The Components of a Computer
What is a floppy disk?
Thin, circular, flexible disk enclosed in rigid plastic A Zip® disk is a higher capacity disk
20
1.3 The Components of a Computer
What is a hard disk?
Provides much greater storage capacity than a floppy disk
பைடு நூலகம்
self-contained hard disk
removable hard disk
第1 章 Introduction to Computers
2014年11月14日星期五
1
第1章 Introduction to
Computer
本章学习目的
Explain why it is important to be computer literate Differentiate among the various types of software Explain the purpose of a network Discuss the uses of the Internet and the World Wide Web Describe the categories of computers and their uses
printer
speaker
System unit
keyboa rd
mouse
PC camera
12
1.3 The Components of a Computer
What is an input device?
Hardware used to enter data and instructions
Storage Device
• Records and retrieves
items to and from a storage medium
18
1.3 The Components of a Computer
What are common storage devices or drives?
CD-ROM or DVD-ROM drive ZIP® drive floppy disk drive
What is miniature storage media?
Portable, thin, credit card size memory Used in digital cameras and handheld computers
Memory card miniature storage media
CD-RW drive
Zip® drive hard disk drive (inside case)
CD-ROM or DVDROM drive
floppy disk drive
15
1.3 The Components of a Computer
What are two main components on the motherboard? Central Processing Unit (CPU)
6
1.2 What Is a computer and What does it do ? How is a computer defined?
Electronic machine operating under the control of instructions stored in its own memory • Accepts data • Manipulates data • Produces results • Stores results
terminology used in environments which utilise computer equipment.
3
Computer Competency
Microcomputer technology has changed the world dramatically. If I think back 20 years ago, very few people had the opportunity to use a computer if they were not a programmer, data-entry person or computer operator. Now nearly everyone has a chance to use a computer either at home or in business.
The purpose of these lectures is to help you become competent in both computer English reading and computer-related skills.
• To understand the basic concepts and
4
1.1 computer literacy Computers are everywhere When you hear the word computer, initially you may think of those found in the workplace-the computers used to create business letters, memos, and other correspondence; calculate payroll; track inventory; or generate invoices.
What is a chip?
Device with microscopic pathways that carry electrical currents Attaches to motherboard
Processor chip
Memory chip
17
1.3 The Components of a Computer
14
1.3 The Components of a Computer
What is the system unit?
Box-like device containing electronic components connected to motherboard Also called a chassis
24
modem
1.4 Computer Software
What makes a computer powerful?
Storage Reliability
Speed
Accuracy
Communications
25
1.4 Computer Software
What is a computer program?
A series of instructions that tells the computer what to do
Public Sub star(ByVal n As Single) Const pi = 3.14159 Randomize m = Int(Rnd * 16) colr = QBColor(m) mFrm.Line (X, Y)-Step(n * Sin(pi / 10), -n * Cos(pi / 10)), colr mFrm.Line -Step(n * Sin(pi / 10), n * Cos(pi / 10)), colr mFrm.Line -Step(-n * Cos(2 * pi / 10), -n * Sin(2 * pi / 10)), colr mFrm.Line -Step(n, 0), colr
7
1.2 What Is a computer and What does it do ? What are data and information?
Data
Raw facts, figures, and symbols
Information
Data that is organized, meaningful, and useful
21
1.3 The Components of a Computer
What is a compact disc?
Portable storage media • CD-ROM • CD-RW • DVD-ROM • DVD+RW
22
1.3 The Components of a Computer
scaner
keyboa rd
mouse PC camera
13
1.3 The Components of a Computer
What is an output device?
Hardware that conveys information to a user
printer
speaker
monitor
What are hardware and software?
Hardware
Electronic and mechanical equipment
Software
Instructions that tell hardware how to perform tasks
10
1.2 What Is a computer and What does it do ?