Chapter 1

Introduction to Using Computers

What is a Computer and What Does It Do?

• Computer
• Data
• Information
• Input/Output
• Storage
• Information Processing Cycle

Components of a Computer

• Input Devices
• Output Devices
• System Unit
• Central Processing Unit
• Memory
• Storage Devices
• Communication Devices

Why is a Computer So Powerful?

• Speed
• Reliability
• Accuracy
• Storage
• Communications

Computer Software

• Computer Program
• Execute
• Install
• System Software
• Operating System
• Utility Programs
• User Interface/GUI
• Application Software
• Packaged Software
• Custom Software
• Shareware
• Freeware and Public Domain Software
• Software Development
• Computer Programmers
• Systems Analyst

Networks and the Internet

• Network
• Resources
• Internet
• ISP

Categories of Computers

• Personal Computers
• Desktop Computers
• Workstation
• Stand-Alone
• Server
• Network Computers & Web Appliances
• Network Computer
• Web/Internet Appliances
• Portable Computers/Laptops
• Handheld Computers
• Palmtop
• Personal Digital Assistant (PDA)
• Pen Computers
• Minicomputers
• Mainframe Computers
• Supercomputers

Computer Usage

• Home Users
• Small Business Users
• Mobile Users
• Docking Stations
• Large Business Users
• Kiosk
• Power Users