1. Introduction to Computers

2. Part I
Hardware

3. Computer System

4. Definition of a Computer
A computer is an electronic machine, operating under the control of instructions stored in its own memory, that can do the following:
Accept data
Manipulate the data according to specified rules
Produce results
Store the results for future use

5. Data and Information
Data – facts and figures which are enter in to a computer
Information – logical output from a computer based on the data inputs

6. Computer Types

7. Hardware Output System Unit
Hardware is the electric, electronic, and mechanical equipment that makes up a computer.
Input
Keyboard
Mouse
Scanner
Microphone
Digital camera
PC camera
Output
Monitor
Printer
Speakers
System Unit
CPU (Processor)
Memory (RAM)

8. External Parts of a Computer

9. The Monitor Types Size: measured diagonally Resolution
CRT (Cathode Ray Tube)
LCD (Liquid Crystal Display)
Size: measured diagonally
Resolution
640 x 480
800 x 600
1024 x 768

10. The Mouse Types Buttons Mechanical Optical Wireless Other Types Left
Serial
PS/2
Optical
Wireless
Other Types
Trackball (roller ball)
Touch Pads
Pointing Stick
Buttons
Left
Right
Wheel

11. Keyboard Function Keys Space Bar Ctrl + Alt + Delete Directional Keys
Number Pad and Number Lock
Cap Lock and Cap Lock Light
Print Screen Key
Escape Key

12. Internal Parts of a Computer
Power Supply
Motherboard (Main)
CPU
RAM
Video Card
Audio Card
Hard Drive
DVD-RW Drive
Ethernet Card
Fans

13. Basic Operation
Monitor
Storage
Memory
RAM
CPU
Keyboard
Mouse

14. Peripherals Any external device that attaches to the system
Printer
Scanner
Modem
Speakers
Microphone
PC Camera
Exceptions: Keyboard and the Mouse
Note: Most Peripherals need a Device Driver

15. Printers Types Ink Jet (Sprays ink to produce an image)
Laser (electrostatic charged powder to produce an image)
Dots per inch (dpi)
Pages per minute (ppm)
Memory
Duplex
Duty cycle

16. Connections Power Input Audio Connections Ports
115v or 230v
Ports
PS/2 Port
Serial Port
Parallel Port
Video Port
AGP Slot
DVI Slot
USB (Universal Serial Bus)
Ethernet Port
Audio Connections

17. Storage Devices Hard Drive Floppy Disk Drive Zip Drive CD-RW Drive
DVD±RW Drive
USB Flash Drive
Tape Drive

18. Computer Drives A Drive (the Floppy Drive) C Drive (the Hard Drive
D Drive (the CD or DVD Drive)
E Drive (the USB Drive

19. Protection
Surge Protectors
Power backups

20. Part II
Software

21. Software
Software, also called a computer program, is a series of instructions that tells the hardware of a computer what to do

22. Software (Operating Systems)
DOS (Disk Operating System) text based operating system
GUI (pronounced gooey) graphical user interface
Windows (3.1, 95, 98, 98 Second edition, NT, 2000, XP (Home and Professional), Vista
Linux

23. Windows 7
Home Premium
Professional
Ultimate

24. Software (Utility Programs)
Definition: utility programs are software that perform a specific task, usually related to managing a computer, its devices, or its programs
Examples
An uninstaller program
An anti-virus program
A synchronization program
A Thumbnail program

25. Removing a Program from a Computer
Use the Program’s uninstall feature
Use Microsoft’s Add and Remove Utility
Use an uninstaller program

26. Software (Application)
Definition: application software is software that consists of programs that perform specific tasks
Always read the side panel (or back) of the box that the software comes in to see if you have the necessary hardware, memory, and operating system to run the program.

27. Examples of Application Software
Word Processors
Spreadsheet applications
Desktop publishing applications
Database applications
Games

28. Types of Application Software
Pre-installed software
Packaged software
Custom software
Shareware
Freeware
Application Service Provider software (Cloud Software)

29. Buying a New Computer Operating System Junk Software Memory Video
Processor
Hard Dive
Performance
Price