chapter 1 computer internet web and e mail basics l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Chapter 1 Computer, Internet, Web, and E-Mail Basics PowerPoint Presentation
Download Presentation
Chapter 1 Computer, Internet, Web, and E-Mail Basics

Loading in 2 Seconds...

play fullscreen
1 / 26

Chapter 1 Computer, Internet, Web, and E-Mail Basics - PowerPoint PPT Presentation


  • 384 Views
  • Uploaded on

Chapter 1 Computer, Internet, Web, and E-Mail Basics Section A: Computer Basics Computer Concepts 7th Edition Parsons/Oja What is a computer? Computer refers to a device that performs four functions: accepts input processes data stores data produces output

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Chapter 1 Computer, Internet, Web, and E-Mail Basics' - johana


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
chapter 1 computer internet web and e mail basics

Chapter 1Computer, Internet, Web, and E-Mail Basics

Section A: Computer Basics

Computer Concepts 7th EditionParsons/Oja

what is a computer
What is a computer?
  • Computer refers to a device that performs four functions:
    • accepts input
    • processes data
    • stores data
    • produces output

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is a computer3
What is a computer?

1. INPUT

  • Inputmeans to feed information into a computer
  • Input can be typed, submitted or transmitted to a computer system
    • Words and symbols in a document
    • Numbers for a calculation
    • Pictures
  • An input device gathers input and transforms it into a series of electronic signals for the computer to store and manipulate
    • Keyboard
    • Mouse

Chapter 1: Computer, Internet, Web, and E-Mail Basics

computer basics
Computer Basics

What is a computer?

2. PROCESSING

  • Data refers to the symbols that represent facts, ideas and objects
  • Processing is the way that a computer manipulates data
    • performing calculations
    • sorting lists and numbers
    • drawing graphs
  • A computer program is software that sets up a computer to do a specific task
  • A computer processes data in a device called the central processing unit (CPU)

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is a computer5
What is a computer?

3. STORAGE

  • A computer stores data so that it will be available for processing
  • Memory is an area of a computer that temporarily holds data that is waiting to be processed
  • Storage is the area where data can be left on a permanent basis
  • Storage devices include hard drives, CD-ROMs, floppy disks, etc.

Chapter 1: Computer, Internet, Web, and E-Mail Basics

computer basics6
Computer Basics

What is a computer?

4. OUTPUT

  • Computer output is the results produced by the computer
    • Reports
    • Documents
    • Music
    • Graphs
    • Pictures
  • An output device displays, prints or transmits the results of processing
    • Printer
    • Monitor

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is a computer7
What is a computer?

Chapter 1: Computer, Internet, Web, and E-Mail Basics

computer basics8
Computer Basics

What is a computer?

  • Computers use stored programs
    • A series of instructions for completing a task, for example:
      • Calculating interest payments on a loan
      • Word processing
    • These instructions can be easily replaced by a different set of instructions when it’s time for a different task to be completed
      • For example, you can finish editing a report, then move onto sending an e-mail
    • This is the single most important characteristic that distinguishes a computer from other simpler devices, such as calculators

Chapter 1: Computer, Internet, Web, and E-Mail Basics

computer basics9
Computer Basics

Self Quiz Questions

  • A computer does four things:
      • _____________________
      • _____________________
      • _____________________
      • _____________________
  • _________ is an area of a computer that temporarily holds data.
  • A keyboard is an example of a(n) _________ device.
  • A computer processes data in the _________ processing unit.
  • The idea of a(n) ________ program means that a series of instructions for a computing task can be loaded into a computer’s memory.

Chapter 1: Computer, Internet, Web, and E-Mail Basics

computer basics10
Computer Basics

Self Quiz Answers

  • A computer does four things:
      • Accepts input
      • Processes data
      • Stores data
      • Produces output
  • Memory is an area of a computer that temporarily holds data.
  • A keyboard is an example of a(n) input device.
  • A computer processes data in the central processing unit.
  • The idea of a(n) stored program means that a series of instructions for a computing task can be loaded into a computer’s memory.

Chapter 1: Computer, Internet, Web, and E-Mail Basics

computer categories
Computer Categories
  • Before:
    • Computers are categorized into three main categories from least powerful to most powerful:
      • microcomputers
      • minicomputers
      • mainframe computers
  • Today:
    • A computer is categorized based on its technology, function, size, performance, and cost

Chapter 1: Computer, Internet, Web, and E-Mail Basics

computer categories12
Computer Categories
  • Old Computer Categories
    • Mainframe computers were the first type of computer that were very large, and were usually housed in a closet-sized metal frame
      • This term also applies to a category of large, expensive computers that were sold to big corporations and government agencies
    • Minicomputers (1968) were smaller, less expensive, and less powerful than mainframes, and were used by small businesses
    • Microcomputers (1971) were a newer type of computer whose CPU had a single chip, called a microprocessor
  • Today, just about any computer, no matter how large or small, uses one or more microprocessors as its CPU – so these terms are no longer valid

Chapter 1: Computer, Internet, Web, and E-Mail Basics

computer categories13
Computer Categories
  • Today’s Computer Categories
    • Personal computers
    • Handheld computers
    • Workstations
    • Videogame Consoles
    • Mainframes
    • Supercomputers
    • Servers

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is a personal computer
What is a Personal Computer?
  • A personal computer is a type of microcomputer designed to meet the computing needs of an individual
    • Desktop computers
    • Notebook (or “laptop”) computers
    • Cost starts at $500, but most spend $1000 to $1200

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is a handheld
What is a handheld?
  • A handheld computer is one that is designed to fit into a pocket, run on batteries, and be used while you are holding it
  • Also called a PDA (Personal Digital Assistant)
    • Send and receive e-mail
    • Use maps and global positioning
    • Maintain expense account, contacts, to-do lists, memos, etc.
    • Make voice calls using cellular service
  • Designed to be a computing accessory, not your main computer

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what types of computers can be classified as workstations
What types of computers can be classified as workstations?
  • The term “workstation” has two meanings
    • Powerful desktop models designed for specialized tasks, such as 3D graphics
    • Ordinary personal computers connected to a local area network
  • A computer network is two or more computers or other devices that are connected for the purpose of sharing data and programs

Chapter 1: Computer, Internet, Web, and E-Mail Basics

is a playstation a computer
Is a PlayStation a computer?
  • A videogame system (i.e. Sony’s Playstation) is a computer, but typically it has not been considered a computer category because of its history as a dedicated game device that connects to a TV set and provides only a pair of joysticks for input
  • Today’s videogame systems contain microprocessors that are equivalent to those found in a fast personal computer, as they are equipped to produce graphics that rival those on sophisticated workstations

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is so special about a mainframe computer
What is so special about a mainframe computer?
  • A mainframe computer is a large and expensive computer that is capable of passing data simultaneously to many users
    • Can cost over $1 million
  • Used by governments and large corporations to provide centralized storage

Chapter 1: Computer, Internet, Web, and E-Mail Basics

how powerful is a supercomputer
How powerful is a supercomputer?
  • A supercomputer is one of the fastest computers in the world, at the time of construction
    • Breaking codes
    • Modeling weather systems
    • Simulating nuclear explosions
    • Research simulations
  • A $100 million supercomputer scheduled for completion in 2005 is designed to use 1 million microprocessors, and will process over 1 quadrillion operations per second

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what makes a computer a server
What makes a computer a server?
  • A server serves the computers on a network by supplying them with data or resources (Internet, network files, printing, e-mail, etc.)
  • A client receives data or uses resources from a server
  • Any computer can be a server or a client
  • High performance servers are needed when there is a need for lots of users and rapid response

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what s a personal computer system
What’s a personal computer system?
  • A personal computer system consists of the following:
    • System unit: case that holds the main circuit boards, microprocessor, power supply, and storage devices
    • Display device: Monitor or LCD screen
    • Keyboard: Primary input device
    • Mouse: Secondary input device
    • Floppy disk drive: Storage for small amounts of data
    • Hard disk drive: Storage for large amounts of data
    • CD and DVD drives: Storage or audio
    • Sound card and speakers: Plays audio
    • Modem: Connects to the Internet
    • Peripheral devices: Printers, scanners, etc.

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is a personal computer system
What is a personal computer system?

Chapter 1: Computer, Internet, Web, and E-Mail Basics

personal computer systems
Personal Computer Systems

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is a peripheral device
What is a peripheral device?
  • A peripheral device designates equipment that might be added to a computer system to enhance its functionality
    • Printer
    • Digital camera
    • Scanner
    • Joystick
    • Graphics tablet

Chapter 1: Computer, Internet, Web, and E-Mail Basics

computer basics25
Computer Basics

Self Quiz Questions

  • The three old categories of computers were
      • __________________
      • __________________
      • __________________
  • Desktop computers and laptops are examples of __________ computers.
  • Microsoft’s Xbox gaming system is considered to be a computer. True or false?
  • A personal computer or workstation that requests data from a server is known as a(n) __________.
  • The ___________ is the case that holds the main circuit boards, microprocessor, power supply, and storage devices for a personal computer system.

Chapter 1: Computer, Internet, Web, and E-Mail Basics

computer basics26
Computer Basics

Self Quiz Answers

  • The three old categories of computers were
      • Mainframe
      • Minicomputer
      • Microcomputer
  • Desktop computers and laptops are examples of personal computers.
  • Microsoft’s XBox gaming system is considered to be a computer. True
  • A personal computer or workstation that requests data from a server is known as a(n) client .
  • The system unit is the case that holds the main circuit boards, microprocessor, power supply, and storage devices for a personal computer system.

Chapter 1: Computer, Internet, Web, and E-Mail Basics