Lesson 2: Performing Computer Operations

LESSON 2: PERFORMING
COMPUTER OPERATIONS
LO 1. Plan and prepare for task to be undertaken
LO 2. Input data into computer
LO 3. Access information using computer
LO 4. Produce output/ data using computer system
LO 5. Use basic functions of a www- browser to locate information
LO 6. Maintain computer equipment and systems
Visit my YouTube channel "Joel Tiemsin" for the activity videos.

COMPUTER SYSTEM
WHAT IS A COMPUTER?
• A computer is an electronic machine
that processes information.
• It takes in raw information using
input devices, stores in the memory
until it is ready to be processed in
the processing unit and sends out
results using output devices.

What are the basic parts of a computer system?
1
2
3
4

Which of the two is the CPU?
1 2

Computers are classified into four (4) different types based on its
processing power and size:

Supercomputer
Supercomputers are the fastest
and most powerful computer in
terms of performance and data
processing. It uses it’s power to
run one program at a time.
Used in:
• Research and exploration
• Weather forecasting
• Nuclear weapon testing
COMPUTER TYPES

Mainframe computer
Mainframe computers are not as
powerful as the supercomputer.
It is designed to run multiple
programs concurrently. It is
commonly used in:
• Banks
• Educational Institution
• Insurance companies
COMPUTER TYPES

Minicomputer
Minicomputers, also known as “Midrange”
computers fill the space between the
mainframe and microcomputer. It is smaller
than Supercomputer or Mainframe
computer but bigger and more powerful
than the microcomputer. They are generally
used as mid-range servers.
Some of its uses are as:
• Data Management device
• Communications Portal
COMPUTER TYPES

Microcomputer
Microcomputers are the most widely used computer – desktop,
laptops, tablets and smartphones. It is the cheapest among the
different classes of computers. This computer is design for general
usage such as entertainment, education and work purposes.
Portable Computer
Laptop
Smartphone
COMPUTER TYPES

Simple Block Diagram of a Computer
System

INPUT DEVICES
Input devices are hardware used to enter data to be processed by the
computer in the processing unit.
INPUT/OUTPUT DEVICES

INPUT DEVICES
Microphone
Touch-sensitive display
Mouse
Keyboard

OUTPUT DEVICES
Output devices are computer hardware that shows or provides
processed data.

OUTPUT DEVICES
Loudspeaker
Printer LED Monitor

Simple Block Diagram of a Computer
System
Volatile Memory
Non-volatile Memory

DATA STORAGE
Data storage is a device capable of holding information either
temporarily or permanently. It is also known as digital
storage, storage, storage media, or storage medium.
Two Types of Storage
• Primary Storage – It stores data temporarily. Ex. RAM
• Secondary Storage – It stores data permanently. Ex. Hard Drive
A secondary storage can be removable, internal or external storage.

SSD (Solid State Drive)
HDD (Hard Disk Drive)
DATA STORAGE
RAM (Random Access Memory)

KINDS OF COMPUTER STORAGE
DATA STORAGE

How do you backup your important files?
DATA STORAGE
External drives Online/Cloud Storage
Partitioned drive

SSD
Memory Stick
HDD
CD/DVD
Flash StorageMemory Card
DATA STORAGE

Dell #1 laptop
8GB RAM
I7 Processor
128GB SSD Storage
Dell #2 laptop
8GB RAM
I7 Processor
1TB HDD Storage
1. Which of the two laptop is the best choice? Why?
2. Which of the two is easier to upgrade?

Dell #1 laptop
I7 Processor
128GB SSD Storage
8GB RAM
Dell #2 laptop
I7 Processor
512 SSD Storage
4GB RAM
1. Which of the two laptop is the best choice? Why?
2. Which of the two is easier to upgrade?

LOCATING FILES FROM INTERNAL OR
EXTERNAL DRIVES
Figure 2.4: Computer Storage

LOCATING FILES FROM INTERNAL OR
EXTERNAL DRIVES

Can you identify some software or
applications that are used by the following in
performing computer related tasks?
1. Teachers
2. Civil Engineers
3. Businessmen
4. Graphics Designers

COMMON COMPUTER APPLICATIONS USED IN PERFORMING
COMPUTER RELATED DUTIES
MICROSOFT OFFICE APPLICATION
MS Office application is a package application developed by Microsoft
and is intended to be used in offices and schools.

MS Word
A word processing application used for creating documents such as
letters, brochures, activity programs and learning activities.
MS Excel
MS Excel is a spreadsheet program ideal for entering, calculating and
analyzing numeric data such as sales figures, sales taxes and
students’ grades.
MS PowerPoint
MS PowerPoint is a presentation tool that uses graphical approach to
presentation in the form of slides. Its primary function is to help a
presenter deliver its presentation effectively.
COMPUTER APPLICATIONS

Paid Office Applications

Free Office Applications

Photo Editing Software
Photo editing software are commonly used in editing and enhancing
photos that would give you an excellent output.
GNU Image Manipulation ProgramAdobe Photoshop

Video Editing Software
Video editing software are used to edit movies or video clips. Below are
some of the examples of video editing software:
Sony Vegas Pro

WEB BROWSERS
Web browser is an application used to access information on the World
Wide Web. Web browsers interpret and display HTML web pages,
applications, JavaScript and other content hosted on web servers in the
form of text, pictures, audio and video.
Below are some of the commonly used web browsers.
• Google Chrome
• Mozilla Firefox
• Microsoft Edge
• Apple Safari

SEARCH ENGINES
Search engine is a program that enable the users to search for
documents or information on the World Wide Web.
How to search information on the World Wide Web?
1. Click a browser that you want to use – Chrome, Firefox or Edge.
2. Type the search engine that you want to use in the web browser’s
URL (Uniform Resource Locator) and press the ENTER key.
URL
Or
Web
Address

3. Use the search tab of your search engine to find information on the
web.

When searching for an information on the web, the results are
categorized – All, Images, Videos, Maps, News, More (Books & Finance)
Suggestions were also
given by the web
browser.

IDENTIFYING SOFTWARE
Activity:
Name all the computer
software that you know for
the following entrepreneurial
activities. Write your answers
in the box provided for each
business.
WEDDING
VIDEOGRAPHY
AND
PHOTOGRAPHY
SHOP
COMPUTER
SHOP OPERATOR
TECH VLOGGER
ANSWER

BASIC COMPUTER SYSTEM MAINTENANCE
FOLDERS
Folders are used to organize and categorize files in your computer
storage.

ANTIVIRUS
Use the antivirus to check your computer, flash drives and other storage for
any files infected with viruses and malware. Make sure that your antivirus has
the latest update.

BACKUP
Creating a backup of your files will give you the assurance that if
something goes wrong with your file, you can still retrieve a duplicate
of your file from your backup storage.
Examples of backup storage
Hardware
Cloud

SYSTEM UPDATE
System updates were designed to address software and security issues
and problems in our computers. This ensures safe computing.

To update your operating system, just follow
the steps below:
1. Click on the Windows 10 start button.
2. Click the Settings – the one with gear-liked icon.
3. In the Windows Settings that would appear on your screen, scroll
down to Update & Security and click it.
4. In the Windows update window, click Check for updates. Restart
your computer after the installation of updates.

FIRMWARE/DRIVER UPDATE
Firmware updates are updates designed to improve the functionality of
components in your computer system such as the keyboard, mouse,
display, sound, network, BIOS, USB and many more.

INSTALLED THIRD PARTY SOFTWARE UPDATE
Third party software should be updated to improve their functionality.
Most of the third party software will automatically search for the
updated version of software every time you open them like the web
browsers, Microsoft Office, Adobe suits, networking tools and many
more.

Individual Activity (20 Pts.)
•In an A4-size bond paper, create a poster that
illustrates computer maintenance. It could be any of
the following:
• Updating computer software
• Scanning computers for viruses
• Performing data backup
• others Criteria
Informative Art work: 10 pts.
Art/Design: 10 pts.

COMPUTER
DEALER
1. Microsoft Office 2013/2016/365
2. Microsoft Edge Chrome / Firefox
3. Kaspersky / Norton / McAfee
4. Amazon, eBay (Online Stores)

WEDDING
VIDEOGRAPHY
AND
PHOTOGRAPHY
SHOP
2. Adobe Photoshop / GIMP / PhotoScape
3. Adobe Premiere/Sony Vegas

ENGINEERING
AND
CONSTRUCTION
FIRM
2. AutoCAD (Computer Aided Design)
3. Solid Works (3D Designing)
7. Python, C++ (Coding Software)

Lesson 2: Performing Computer Operations

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