Understanding computers ch 1

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Transcript of Understanding computers ch 1

  • 1. Understanding Computers Basic Computers L. Stack

2. Vocabulary Words

  • Hardware :The equipment that makes up a computer
  • Central Processing Unit (CPU): hardware that directs how information flows in, out, and through a computer
  • Hard Drive: a tool, built into the computer, for storing data and instructions.
  • Keyboard: the set of keys with numbers and letters used to type information into a computer.

3. Vocabulary Words

  • Mouse: a pointing tool that you move with your hand.
  • Monitor: a screen that shows information on a computer
  • Input: the information that is put into a computer.
  • Output: the information that comes out of a computer
  • Software: a set of instructions that tells a computer what to do.

4. Vocabulary Terms

  • Processing entering data into the computer
  • Storage saving data, programs, or output for future use.
  • Data Raw, unorganized facts
  • Information Data that has been processed into a meaningful form
  • Communication The transmission ofdata from one device to another.

5. What is a computer?

  • A computer is a machine that uses a set of instructions to do many kinds of jobs.
  • A computer can do math.
  • It can collect, store, and display information.
  • It can help write, draw and play games.
  • It can also let you communicate with people all over the world.

6. Computers in Your Life

  • Before 1980
    • Computers were large and expensive
    • Very few people had access to them
    • Computers were mostly used for high-volume processing tasks
  • Microcomputers in the early 80s
    • Inexpensive personal computers
    • Computer use increased dramatically
  • Today
    • More than 80% of US households include a computer, and most use computers at work
    • Electronic devices are converging into single units with multiple capabilities

Understanding Computers in a Changing Society, 4 thEdition 7. Types of Computers

  • Personal Computers , PC,Macs, Desktops, Lap tops and Netbooks.
  • Computers on the Go consumer kiosks ATM machines. Portable computers and Web-enabled mobile devices
  • Mainframe Very large computer
  • Supercomputer very fast computer

8. Types of Computers

  • A personal computer or PC : is a small computer made to be used by one person at time.
  • It can do a few jobs at one time.
  • People often use personal computers at home, in school or on the job.
  • Sometimes personal computers can be linked together to allow more than one person to share or access the same information.

9. Mainframe

  • A mainframe is a very large computer compared to a personal computer.
  • It can be as big as a refrigerator.
  • They can store huge amounts of information and can do many jobs at the same time.

10. Supercomputers

  • Supercomputer is a very fast computer.
  • Supercomputers are used to do jobs at the fastest speed possible.
  • Often called crunchers.

11. Uses for Personal Computers

  • School / Home
  • Take computerized tests.
  • Present computerized reports.
  • Write letters
  • Play video games.
  • Buy things on the internet.
  • Chat on line
  • Send e-mails
  • Home/ Work
  • Send e-mails.
  • Track inventory
  • Create memos
  • Create agendas
  • Create presentations
  • Record keeping

12. Uses of Mainframes

  • Telephone companies
  • TV studios
  • Transportation departments control traffic signals, railroads and subways
  • Banks keep track of money
  • Supermarket keep track of goods and prices
  • Companies keep track of work records, print bills and track customer payments.

13. Uses of Supercomputers

  • Weather forecasting predict weather.
  • Air Traffic controllers locate and track air plains.
  • NASA launches rockets and guides the space shuttles.
  • Artist make animated graphics.
  • Sportscasters figure sport teams statistics

14. Computers Then

  • PrecomputersDr. Herman Holleriths Punch Card Tabulatin Machine and Sorter used to process the 1890 U.S. Census data.
  • First Generation Computers1946-1957 The were very big and powered by thousands of vacuum tubes.ENAIAC

15. Computers

  • Precomputers
  • First Generation Computer

16. ENIACElectronic Numerical Integrator and Computer.

  • One of the first computers.
  • Built in 1945 by J. P. EchertJR. and J. W. Mauchly.
  • Much larger than today's computers made up of 40 separate units.
  • Weighed as much as four adult African elephants .
  • Had to set thousands of switches and rewrite the machine. Worked for 9 years.

17. Computers

  • Second Generation
  • Third Generation

18. Computers

  • FourthGeneration
  • Fifth Generation

19. Parts of a computer

  • All the equipment that makes up a computer is called the computershardware.
  • Printer
  • Monitor
  • Keyboard
  • Central Processing Unit (CPU) or Processor
  • Mouse
  • Computer Case
  • Hardware

20. Computer Parts 21. Functions of Hardware

  • CPU
  • CPU directs how information flows in, out and through the computer.
  • It is the part that does the math and other jobs performed by the computer.
  • It is also called the processor.
  • Hard Drive
  • The hard drive is a tool for storing data and instruction.
  • It is built into the computers case.
  • A hard drive is like a filing cabinet. It h olds information until you need it.

22. Hardware functions

  • Keyboard / Mouse
  • The keyboard is a set of keys with numbers and letters, used to type information into the computer.
  • The mouse is a pointing tool that you move with your hand.
  • Both the keyboard and mouse let you tell the computer what you want it to do
  • Monitor / Printer
  • The monitor is a screen that shows information on a computer.
  • Printer lets you make paper copies of the work you do on the computer.