slide1 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
WHAT is a Computer? PowerPoint Presentation
Download Presentation
WHAT is a Computer?

Loading in 2 Seconds...

play fullscreen
1 / 33

WHAT is a Computer? - PowerPoint PPT Presentation


  • 85 Views
  • Uploaded on

WHAT is a Computer?. A Computer is a machine that manipulates information or "data." Type documents, send email, and surf the Internet. Spreadsheets, accounting, database management, presentations, games, and desktop publishing. Parts of Computer.

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 'WHAT is a Computer?' - emma-dorsey


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
what is a computer
WHAT is a Computer?
  • A Computer is a machine that manipulates information or "data."
  • Type documents, send email, and surf the Internet.
  • Spreadsheets, accounting, database management, presentations, games, and desktop publishing.

Introduction To Information Technology

parts of computer
Parts of Computer
  • The computer case is the metal and plastic box that contains the main components of the computer.
  • Computer cases come in different shapes and sizes.
  • A desktopcaselies flat on a desk, and the monitor usually sits on top of it.
  • A tower case, is tall and sits next to the monitor or on the floor.

Introduction To Information Technology

parts of a computer
Parts of a Computer
  • Central Processing Unit (CPU)
      • The brain of a computer
      • Oversees everything that a

computer does.

Introduction To Information Technology

parts of a computer1
Parts of a Computer
  • Motherboard
      • Main circuit board that all other internal components connect to (CPU and memory are usually on it)

Introduction To Information Technology

motherboard
Motherboard

Expansion

Slots

Intel Chipset

RAM

Slots

Introduction To Information Technology

storage
Storage
  • Two Types of storage: Primary

Secondary

Primary Storage : RAM

Secondary Storage : Hard Disk

Removable Disk

Floppy Disk

CD / DVD

Introduction To Information Technology

parts of a computer2
Parts of a Computer
  • Memory
      • Very fast storage media to save data.

Introduction To Information Technology

memory
Memory
  • Several Types:
      • Random Access Memory – Temporary stores info
      • Read Only Memory – Permanent type of storage (CD-ROM)
      • Basic Input Output System (BIOS) – Type of ROM that establishes a communication when the computer is first turned on.

Introduction To Information Technology

memory1
Memory

BIOS

ROM

RAM

Introduction To Information Technology

parts of a computer3
Parts of a Computer
  • Hard Disk
      • Large-capacity permanent storage
      • Holds information like programs and documents

Introduction To Information Technology

hard disk
Hard Disk

Introduction To Information Technology

parts of a computer4
Parts of a Computer
  • Expansion Slots
      • Sockets built into the motherboard
      • Allow for expanded capabilities and components to be installed
      • Examples include:
        • Video cards
        • Sound cards
        • Modems

Introduction To Information Technology

expansion slots
Expansion Slots

Internal Modem

Sound Card

Video Card

Introduction To Information Technology

slide15

Parts of a Computer

  • The monitor, which resembles a television, is where the computer displays text and pictures.
  • The keyboard lets you type information into the computer. It resembles a typewriter keyboard.

Introduction To Information Technology

slide16

Parts of a Computer

  • The mouse is the hand-held device that lets you point, click, and move objects on the monitor screen.
  • Have a ball underneath which allows you to easily move it on a flat surface.
  • Has two or three buttons used to move a cursor around the screen

Introduction To Information Technology

slide17

Parts of a Computer

  • A trackball,touchpad, and touch screen are alternatives to the mouse
  • A trackball is similar to a mouse, but the ball that helps maneuver the cursor is on top instead of underneath.
  • When using a touchpad or touch screen, you can use your finger or a tool called a stylusto move around thescreen.

Introduction To Information Technology

parts of a computer5
Parts of a Computer
  • The printer is a machine that prints a paper copy of what you see on the monitor.

Introduction To Information Technology

input devices
INPUT DEVICES
  • There are few types of Input Devices
      • Keyboards,
      • Scanners,
      • Joysticks
      • Digital cameras
      • Microphone
      • Mouse

Introduction To Information Technology

scanner
SCANNER
  • Allows you to copy an image into your computer.
  • 3 main types :
    • Hand-held scanners work like scanning guns used at department stores.
    • Flatbed scanners look like a printer and can scan only loose, single pages.
    • Sheet-fed scanners look and act like a copy machine.

Introduction To Information Technology

scanners
Scanners

Handheld Scanner

Flat Bed Scanner

Sheet fed Scanner

Introduction To Information Technology

microphones and joystcks
MICROPHONES AND JOYSTCKS
  • Microphone = Connect the microphone to the computer and use the computer to record sound.
  • Joystick = A lever used while playing a computer game.

Introduction To Information Technology

digital camera
DIGITAL CAMERA
  • Capture a picture in digital (computer-readable) form.
  • Transfer image directly from the camera to the computer.
  • Uses an image sensor to capture hundreds of thousands of tiny squares calledpixels.

Introduction To Information Technology

output devices
OUTPUT DEVICES
  • Computer monitors
  • Speakers
  • Earphones
  • Printers

Introduction To Information Technology

printers
PRINTERS
  • 3 main types :
    • Dot matrix printers produce characters and illustrations by striking pins against an ink ribbon.
    • Ink jet printers shoot tiny drops of ink onto paper.
    • Laser printer produces better quality black text documents and usually turns out more pages at a lower cost per page than inkjets.

Introduction To Information Technology

printers1
Printers

DOT MATRIX

LASERJET

INKJET

Introduction To Information Technology

monitor
MONITOR
  • Allows you to see images / text.
  • Sizes including 15, 17, 19 and 21-inch

Introduction To Information Technology

monitors
Monitors

Cathode Ray Tube

(CRT) Monitor

Flat Screen Monitor

Touch Screen Monitor

Introduction To Information Technology

speakers and earphones
SPEAKERS AND EARPHONES
  • SPEAKERS are devices that connect

to a computer and make sound and music audible.

  • EARPHONESare output devices. Plug

earphones into your speaker, monitor, or

case to listen to music, movie clips and other media.

Introduction To Information Technology

how does a computer work
How Does a Computer Work ?

OStakes over

BIOS launches

Operating System

BIOS software does it’s thing

(looks at system’s memory,

software, etc…)

Press the “ON” button

Introduction To Information Technology

how does a computer work1
How Does a Computer Work ?

OS saves

settings

for next time

All active programs

closed by OS

Close program and click “Shut Down”

Introduction To Information Technology

terminals
TERMINALS
  • 2 types of personal computer :
    • IBM compatibles
    • Macintosh.

Introduction To Information Technology

types of computers
TYPES OF COMPUTERS

Server

  • Manages a network of computers.

Laptop

  • Sometimes called a notebook computer.
  • Laptops users typically don't use a mouse to navigate around the screen.

Introduction To Information Technology