2. Objectives:
Identify types of computers and how they process information
Determine the functions of computer hardware components
Enumerate the factors to consider when buying computer
equipment
Identify how to maintain computer equipment and solve
common problems
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3. What is a computer?
Computer is an electronic device that accepts,
processes, stores, and outputs data at high speeds
according to programmed instructions.
There are two basic components that make up a
computer: hardware and software.
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4. A computer…
Is the greatest invention since man learned to use
electricity.
Affects almost every aspect of people‘s live
Is no smarter than the humans who program them.
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5. Uses of Computers:
Word processing
Calculations
Communication
Computer-assisted learning
Research
Presentations
Database management
Automation
Entertainment
Back Next: Parts of a Computer
6. Parts of the Computer
Next: Types of Computers
Monitor
System Unit
Keyboard
Mouse
Printer
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7. IBM Blue
Gene/L
Supercomputer
Types of Computers
Back
Biggest processing capacity
Fastest calculation ability
Used for weather forecasting,
climate research, nuclear research
etc.
8. Types of Computers
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High service availability
Can be continuously operated
for years without interruptions
Used for credit card
transactions, census, banking
system etc.
Mainframe
10. Next: Types of Microcomputers
Microcomputer
Types of Computers
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Single-user computer
Begins its popularity in
1970
Used for word processing,
presentations, spreadsheet
etc.
11. Common Types of Microcomputers
Laptop/Notebook
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Macintosh (Mac) Handheld/PDA
12. Common Types of Microcomputers
Personal Computer (PC)
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Next: Components of a Microcomputer
Launched in 1980 by IBM
Usually runs with Windows as OS
Most popular type of computer
in use today
13. The Four Main Components of a Microcomputer
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INPUT DEVICES
Input devices allow us to enter information into the computer. They include keyboards,
mice, scanners, and microphones.
PROCESSING DEVICES
Processing components manipulate the information once it is "in" the computer. In the
microcomputer there is a set of common components consisting of the central processing
unit (CPU), interface components, and memory (RAM).
STORAGE DEVICES
Storage devices store the entered information and programs for future use. Common
storage devices include hard disks, floppy disks, and CD-ROMs.
OUTPUT DEVICES
Output devices are how the manipulated information is returned to us. They commonly
include video monitors, printers, and speakers.
Parts of the System Unit
17. Processing Device
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Note: Random-Access Memory (RAM) helps
in processing the information
Central Processing Unit (CPU)
Also known as the microprocessor
Performs calculations
Compares data
Processes results
18. CPU’s speed
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CPU Speed Release Date
Core 2 Quad 3.33 Ghz 2006
Intel Core 2 1.06 GHz to 3.33 GHz 2006
Intel Core 1.06 GHz to 2.33 GHz 2006
Pentium 4 1.3 GHz to 3.8 GHz 2000
Pentium III 450 MHz to 1 GHz 1999
Pentium II 266 MHz 1997
Pentium 133 MHz 1993
486 66 MHz 1989
386 25 MHz 1985
80286 12.5 MHz 1982
8088 8 MHz 1979
27. Uses of the following keys in the Keyboard
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28. Parts of a Mouse
Left Button
Back
Right Button
Wheel
(Not always
available) Palm Rest
Mouse Actions:
1. Click
2. Double-click
3. Right-Click
4. Point
5. Drag
Mouse is the palm sized input device
which is designed to sit on your
desktop.
36. Hard Disk Drive
Cross-section of HD
Paralell Advanced
Technology Attachment
Serial Advanced Technology
Attachment
Advantages:
1. Speed (data transfer)
2. Temperature
3. Connectivity
46. Common Hardware Problems
Computer won’t start
Mouse is not working well/at all
Keyboard is not working
Printer: Paper Jams
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47. Factors that affect computer
performance
Viruses- Trojans, Spywares, Malwares
Conflict OS version and hardware requirements
No device driver installers
Power Failures
Lack of hard disk space
Low memory
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48. How to maintain your computer
Disk Cleanup
Defragmentation
Protect from the following:
Temperature Extremes
Fire, Smoke, Dust, Bugs
Earthquake
Food, Drinks, Water
Power Outages
Theft
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49. How to Buy a PC
Computing Fundamentals
What is my purpose of buying a PC?
What OS will best support the applications that I
will use?
Do I need portability?
Do I need versatility?
How about the warranties?
Maintenance Installing New Software
Basic Troubleshooting
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