Computer Fundamentals

1
Computer Fundamentals

• Module 1
• Ivan Hurt
• Computer Tech Instructor

2
Objectives

• What makes a computer
• How computers are used
• Types of computers
• Computer systems
• Computer networks

3
What makes a computer

• Computer is electronic device that
• Receive data
• Process data
• Stores data
• Produces a results
• Can anybody give me examples of each

4
3 basic operations of computer

• Computer does 3 basic operations
• , -, /,
• , (logical comparisons)
• Stores and retrieves operations

5
Why computers are so popular?

• Do tasks quickly
• Do tasks accurately
• Store large amounts of data
• Powerful
• Useful

6
Types of computers

• Supercomputers largest and fastest
• Mainframe smaller less powerful, used by
  government and large institutions
• Minicomputer Run UNNIX, preferred by
  programmers scientist, also called a server
• Microcomputers aka desktop computer
• Notebook portable, lighter

7
Other computing devices

• PDA limited capabilities, lacks keyboard
• Cellular phones turning into computers
• Video gaming systems Xbox 360 Playstation 3
  have the same features as high-end computers

8
Computer systems consists of

• Hardware
• Software
• Data
• People

9
Computer Networks

• Data communications, enables computers to
  communicate with each other
• 4 components
• Sender
• Receiver
• Channel
• Protocol

10
Networks

• Local Area Network (LAN)
• 2 or more computers
• Within an office
• Limited area of feet
• Wide Area Network (WAN)
• Covers several LANs
• Within a city, state, countries
• Limited to miles