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Computer Concepts. Computer Information Systems. Explain the functions of computer system components. Describe the information processing cycle. Describe various computer input & output devices. Describe various auxiliary storage devices. Describe wireless and mobile devices.

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Presentation Transcript
computer concepts

Computer Concepts

Computer Information Systems

course competencies

Explain the functions of computer system components.

  • Describe the information processing cycle.
  • Describe various computer input & output devices.
  • Describe various auxiliary storage devices.
  • Describe wireless and mobile devices.
  • Identify basic networking components.
Course Competencies
processor

Central Processing Unit (CPU)

  • Brain of a computer
  • Executes program instructions
Processor
memory

Main Memory / Primary Storage

  • Used during information processing cycle
  • Lost when computer powers off
Memory
input devices

Any peripheral (piece of hardware equipment) used to provide data to the computer

  • Mouse, keyboard, camera, scanner
Input Devices
storage

Secondary Storage

  • Not directly accessible by CPU
  • External hard drive, USB flash drive, memory card
Storage
what is the purpose of the information processing cycle as it relates to computer systems
What is the purpose of the information processing cycle as it relates to computer systems?

The main function of a computer system is to process information.

cd dvd

Storage device

  • Optical disk – uses light / lasers
  • Often used for music, text files, and photos
  • Read-only vs. rewritable
CD / DVD
external hard drive

Storage

  • Stores large data sets
  • Connects by USB port
External Hard Drive
usb flash drive

Storage device

  • Convenient & portable
  • Fast!
  • Easy to erase / rewrite
USB Flash Drive
keyboard

Input device

  • Used to enter text information into the computer
Keyboard
microphone

Input device

  • Records sound & digitizes it to be stored in the computer for playback
Microphone
monitor

Output device

  • Provides a visual display from the computer
Monitor
mouse

Input device

  • Handheld pointing device that controls the on-screen cursor
Mouse
printer

Output device

  • Produces a computer image on paper
  • InkJet vs. LaserJet
Printer
scanner

Input device

  • Images a printed page or graphic by digitizing it
Scanner
speakers

Output device

  • Converts electric current into sound format
Speakers
touch screen

Input & output device

  • Touch-sensitive display screen on which a user can make choices by pressing button images
Touch Screen
server

Computer designed to process requests and deliver data to other computers over a local network or the Internet

  • Central repository of data and various programs that are shared by other users in a network
Server
router

Join multiple networks together

  • Able to filter traffic by analyzing IP addresses of senders and receivers
Router
switch

Joins multiple computers together within one local area network

  • Inspects data and determines the source & destination
Switch
firewall

Protects a computer network from unauthorized access

  • Also limit access to the outside from internal users
Firewall
exit ticket

3 different input devices

  • 2 auxiliary storage devices
  • 1 basic networking component
Exit Ticket!