9

TLE - EPAS
Quarter 1 Module
– 2: week 3-4
Performing Computer
Operations (PCO)
 What I Know

Directions: Read and write the letter of your answer. Use the activity sheet for your answer.

1. What is the best way to protect your hard drive data?

a. regularly make a backup.
b. periodically defrag it.
c. run chkdsk at least once a week.
d. run scandisk at least once a week.
2. What input device allows you to type the information into the computer?
a. mouse
b. monitor
c. keyboard
d. hard disk
3. Which of the following key combination will you use to save files? a. ctlr + S
b. ctrl + C
c. ctrl + V
d. ctrl + P
4. It is a device used primarily to provide hardcopy.
a. CRT
b. computer console
c. printer
d. card reader
5. What type of computer devices are the speakers or headphones?
a. input
b. input/output
c. software
d. output
6. It is also called the screen or monitor.
a. printer
b. scanner
c. hard disk
d. display
7. Which group consists of input devices only?
a. mouse, keyboard, monitor
b. mouse, keyboard, printer
c. mouse, keyboard, plotter
d. mouse, keyboard, scanner
8. What type of device is a digital camera?
a. input
b. output
c. storage
d. software
9. Why is PowerPoint known as presentation application?
 a. It transforms the signal from the computer's sound card into audio.
b. It uses slides to convey information rich in multimedia.
c. It is used in academic and research fields.
d. It is read by bouncing the laser beam off the surface of the medium.
10. What compact disc can be written once and read arbitrarily many times?
a. CD-R Disc
b. flash drive
c. hard disk
d. monitor
11. How often do we clean up Running Disk?
a. once a day
b. once a week
c. once a month
d. twice a month
12. What is the procedure in disk clean up?

A. know w/c drive you want to clean up

B. select the appropriate drive to click
C. check each of the boxes for clean up
D. open disk want to clean up

a. d,a,b,c
b. a,b,c,d
c. b,c,d,a
d. d,a,b,c
13. Why is it necessary to unplug electrical equipment before cleaning?
a. to be safe from breakage
b. to avoid electric shock
c. to prevent current flow
d. to be safe from danger

14. If dust contains conductive particles, what will happen?

a. it can cause power shortage
b. it can minimize heat
c. it can cause short circuit
d. it can give problem

15. What is the first step in cleaning laser printer.

a. vacuum inside printer
b. switch off & unplug printer
c. wear disposal plastic gloves
d. use lint-free swab
 Lesson Performing Computer
2 Operations
What’s In

Activity 1
Directions: Match the pictures in column A with their names in column B; Write only the
letter of your answer. Use the activity sheet for your answer.
Column A Column B

A.
A. IDE

B.
B. RESISTOR

C. C. AGP
 D D. DVI

E
E. UTP

F
F. WORK ORDER TEMPLATE

What’s New

Activity 2:
Direction: Complete the table by writing the name usage of each picture. Write your answer
in the activity sheet.

Picture Name Usage

 What is It

Plan & Organize Work Activities

Determine Specific Tasks

Brainstorm all required tasks throughout the day. Don't worry about organizing at this stage. Think about
everything that happens during the day from walking in the door, making the coffee and logging into the
computer. If phones need to be turned on from a voice service, include this along with checking messages.

Prioritize and Sequence Tasks

Group tasks together. There may be tasks that need to be done in a specific sequence or together. For example,
there may be a series of actions required in opening the office from unlocking the door, disarming the alarm,
switching voicemail off, checking messages and making the first pot of coffee. Go through the entire brainstormed
task list and group related tasks.

Set Realistic Timetables

There are some grouped tasks that need to be done at specific times of the day. For example, opening and closing
tasks can't be done in the middle of the day. However, other tasks have timetable flexibility. Break the day down
into sections to establish a routine. For example, the first hour of the day could be devoted to returning messages
from voicemail and email. The next hour could be devoted to sales related tasks with the following hours before
lunch reserved for client meetings.

Remove Potential Distractions

There are so many potential distractions in everyone's workday. Personal cell phones, text messages, instant
messages, social media and internet surfing are huge distractions but aren't the only ones. Excessive coffee
breaks and talking to co-workers greatly reduce productivity as well. Set break times and turn off all devices that
could potentially distract from completing tasks.

Basic Computer Hardware

Input Devices
An input device is essentially a piece of hardware that sends data to a computer. Most input devices either
interact with or control the computer in some way.

Keyboards are the most common type of input device. Before keyboards, interaction
with computers was generally carried out using punch cards and paper tape. Most
English language keyboards use the QWERTY layout for the alphabetic keys, which
are surrounded by number, symbol, function, and other key types.

Mouse
A mouse interacts with a computer through a process known as "point and click."
Essentially, when a user moves the mouse on the mouse pad, the pointer moves in a
corresponding direction on the computer's monitor screen.

Touchpad
Also known as a trackpad, a touchpad is a common substitute for a computer
mouse. It is essentially a specialized surface that can detect the movement of a
user's finger and use that information to direct a pointer and control a computer.
Scanner
The word "scanner" can be used in a number of different ways in the
computer world, but here I am using it to refer to a desktop image scanner.
Essentially, a scanner is an input device that uses optical technology to
transfer images (or sometimes text) into a computer, where the signal is
converted into a digital image.

Digital Camera
Digital cameras are used to capture photographs and videos independently.
Later, these photo and video files can be transferred to a computer by
connecting the camera directly with a cable, removing the memory card and slotting it into the computer, or
through wireless data transfer methods such as Bluetooth.

Output Devices

An output device is a piece of computer hardware that receives data from a computer and then translates that
data into another form. That form may be audio, visual, textual, or hard copy such as a printed document.

Monitor
Mode: Visual
Function: A monitor consists of a screen, circuitry, a power supply,
buttons to adjust screen settings, and a casing that contains all of
these components. A monitor displays data from a computer onto a
screen so the user can interact with the data via a digital interface.

Printer
Mode: Print
Function: The function of a printer is to create a copy of whatever is
sent from the computer to the printer. Printers take electronic data
sent from a computer and generate a hard copy.

Headphones
Mode: Sound
Function: Headphones output audio from a computer through two
individual headphones for a single listener. Also known as earphones,
headphones allow you to listen to audio without disrupting other people in
the vicinity.

Computer Speakers
Mode: Sound
Function: Computer speakers are hardware devices that transform the signal from
the computer's sound card into audio. Speakers create sound using
internal amplifiers that vibrate at different frequencies according to data from the
computer. This produces sound.

Projector
Mode: Visual
Function: As its name suggests, this output device "projects" computer images or video
onto a wall or screen.

Computer Application Software (Microsoft Office)

Computer Image/Logo Definition

Application
Software

Is a word processor published by Microsoft. It is one of the office

productivity applications included in the Microsoft Office suite.
Microsoft Word

Is a software program produced by Microsoft that allows users to

organize, format and calculate data with formulas using a
spreadsheet system.
Microsoft
Excel
 is a database management solution for
Microsoft Windows operating systems
Access

The program uses slides to convey information rich in multimedia.

The term "slide" refers to the slide projector, which this software
effectively replaces.
Microsoft PowerPoint

An email client that includes such functions as calendaring, task

managing, contact managing, notetaking, journal logging, and web
browsing.
Microsoft outlook

is a graphic design application that is similar to Microsoft Word

but differs in the fact that its emphasis lies more on page layout
and design, and less on word composition and formatting.
Microsoft publisher

What’s More

Activity 3:
Direction: Using the activity sheet, complete the table below by writing the name of the
logo/picture and its function and application.
 Hardware and
Name Application or function
Software

What I Have Learned

Activity 4:
Direction: Fill-in the blanks. Use the activity sheet for your answer.

1.) A ________________ is a piece of computer hardware that receives data from a

computer and then translates that data into another form. That form may be audio,
visual, textual, or hard copy such as a printed document.
2.) A _____________is essentially a piece of hardware that sends data to a computer.
Most input devices either interact with or control the computer in some way.
3.) Storage devices are the computer hardware used to _________________.
4.) A ____________is an input device that uses optical technology to transfer images (or
sometimes text) into a computer, where the signal is converted into a digital image.
The digital image can then be viewed on a monitor screen, saved, edited, emailed, or
printed.
 5.) ________________is a software program produced by Microsoft that allows users to
organize, format and calculate data with formulas using a spreadsheet system.

What I Can Do

Activity 5:

Direction: Answer the following questions using the activity sheet.

1. As a 21st century learners, you are assigned to report about the parts of the human body, what
Microsoft Office application will you use to make your report more realistic?
Why

Lesson Input Data into The

3 Computer

What’s In

Activity 6:

Direction: Using the activity sheet, complete the table below by writing the name of the
logo/picture and its function and application.

Hardware and
Name Application or function
Software
 What’s New

Activity 7:
Direction: Analyze the pictures and answer the questions below. Use the activity sheet for
your answer.

Questions:
1. How will you relate the picture in your daily activities?
2. How technology/computer use in global education?

What is It
Application Software

A computer application is any program, or group of programs, that is designed for the end
user. Include such things as database programs, word processors, Web browsers and
spreadsheets. Commonly use as application software is Microsoft Office.

Data processing can be defined by the following steps  Data

capture, or data collection.
• Data storage.
• Data conversion (changing to a usable or uniform format).
• Data cleaning and error removal.
• Data validation (checking the conversion and cleaning).
• Data separation and sorting (drawing patterns, relationships, and creating subsets).
• Data summarization and aggregation (combining subsets in different groupings for
more information).
• Data presentation and reporting.

Editing and Saving data

Editing Microsoft Word document

1. Open the file that you want to edit.
2. Choose from the following tasks:

Task Steps
Edit text • Click the Edit tab.
• Select the text that you want to edit.
• Using the tools in the edit toolbar, change the required
formatting including font style, paragraph alignment, list
formatting, and indentation options.

Insert • Click the Insert tab.

images • Place your cursor where you want to add an image.
• To add an image from your computer, click Image.
• Choose the image to add.
 Mark up the If you are viewing a .docx file, you can use the following review
document features:
• Click the Review tab.
• Click Author to enter the name that will be associated with
the changes that you make in the document.
 Turn on Track Changes if you want to keep track of the
changes that you make to the document.
 Turn on Show Changes to see all the changes that have
been made to the document.
 Click Accept to convert the currently selected tracked
change to final text.
 Click Reject to revert the currently selected tracked change
to the previous text.
 Click Next to go to the next tracked change in the
document.

Editing Microsoft Excel

1. Open the spreadsheet that you want to edit.
2. Choose from the following tasks:

Task Steps
Insert a new • Click the Insert tab.
row or • Place your cursor where you want to insert a row or column.
column • On the insert toolbar, choose the insert option that you require.
Edit content • Click the Edit tab.
in a cell • Click the cell that you want to edit.
• Using the tools in the editing toolbar, make any necessary
formatting changes.

Change cell • Click the Format tab.

size or merge • To change the size of a cell, select the cell and type a new width
cells or height or use the sliders.
Insert a • Click the Formula tab.
formula • Select the cell where you want to add a formula.
 On the formula toolbar, choose the formula to insert using the
formula selectors or manually type a formula directly into the
formula bar.
 Click Enter

Editing Microsoft PowerPoint

1. Open the Microsoft PowerPoint presentation that you want to edit.
2. Choose from the following tasks:

Task Step
Edit text • Click the Edit tab.
• Select the text that you want to edit.
• Using the tools in the edit toolbar, change the required
formatting including font style, paragraph alignment, list
formatting, and indentation options.
 Insert • Click the Insert tab.
images, • Place your cursor where you want to add an image.
graphics, or • To add an image from your computer, click Image.
shapes • Choose the image to add.

Change • Click the Format tab.

shape and • Select the shape or line that you want to format.
line • Change the object's fill color, line color, line weight, or line
formatting style.

View slides • Click the Slides tab.

• Scroll through the slides.

Saving Data
You can save a file to a folder on your hard disk drive, a network location, the cloud, a DVD,
the desktop, or a flash drive. While you must identify the destination, if it is different than
the default folder, the saving process is the same regardless of what destination you choose.

To save your file:

1. Press CTRL+S or select File > Save.
Tip: You can also select Save on the Quick Access Toolbar.
2. You must enter a name for the file if you are saving it for the first time.

Storage Devices

Storage devices are the computer hardware used to remember/store data.

There are three main categories of storage devices

1. Optical storage devices save data as patterns of dots that can

be read using light. A laser beam is the usual light source.

2.Magnetic storage and retrieval devices include tape, flexible disk, and
rigid disk drives used for audio, video, and data processing
applications.

3. Semiconductor storage device - a temporary data storage domain Two

types of semiconductor memory: Random- Access Memory
(RAM) Read-Only Memory (ROM).

Other Storage Devices Hard Disk Drive

Hard disk drives are non-volatile magnetic storage devices
capable of remembering vast amounts of data.

Flash Drive are non-volatile solid-state storage devices which

use NAND flash memories to store data (millions of transistors).

CD-R (COMPACT DISC – Recordable) is a digital optical disc storage

format. A CD-R disc is a compact disc that can be written once and
read arbitrarily many times.
CD-RW (which stands for Compact Disc ReWritable) is a Compact disc that
can be recorded and erased multiple times. It can hold data or music. Most of
the time it will hold data, since many CD players can not play CD- RWs.
During its development, the format was known as CD-E, which stands
for Compact Disc Erasable.

Digital Versatile Disc." A DVD is a type of optical media used for storing
digital data. It is the same size as a CD, but has a larger storage
capacity.
What I Have Learned

Activity 8
Direction: Fill in the blanks. Write your answer in the activity sheet.

1.)A ____________________is any program, or group of programs, that is designed for the
end user. Include such things as database programs, word processors, Web browsers
and spreadsheets.
2.)A _________________________is a special type of data processing that is used in
academic and research fields.
3.)A __________________________has multiple uses, and may not necessarily require
complex sorting. It was first used widely in the field of marketing, for customer
relationship management applications, and in banking, billing, and payroll functions.
4.)A __________________are non-volatile magnetic storage devices capable of remembering
vast amounts of data.
5.)A ___________is a type of optical media used for storing digital data. It is the same size
as a CD, but has a larger storage capacity.

What I Can Do

Activity 9

Direction: Answer the questions using the activity sheet.

1. State the procedure in opening and editing a file in Microsoft PowerPoint.

2. Specify the steps in inserting images, graphics, or shapes in Microsoft word.
 Lesson Maintain Computer
4 Equipment and Systems

What’s In

Activity 10
Direction: Draw a picture from the item written in the description. Use the activity sheet for
your answer.
Illustration Description
A mouse interacts with a computer through a process known
as "point and click."
A monitor consists of a screen, circuitry, a power supply,
buttons to adjust screen settings, and a casing that contains
all of these components.
Computer speakers are hardware devices that transform the
signal from the computer's sound card into audio.
Flash Drive are non-volatile solid state storage devices which
use NAND flash memories to store data (millions of
transistors
The function of a printer is to create a copy of whatever is
sent from the computer to the printer.

What’s New

Activity 11
Direction: Analyze the pictures and answer the questions below. Write your answer in the
activity sheet.

Questions:

1. What is your understanding about the picture?

2. How will you relate the illustration into your life?
 What is It

Computer Maintenance

Disk cleanup in Windows

Disk Cleanup is a Microsoft software utility first introduced with Windows 98 and included
in all subsequent releases of Windows. It allows users to remove files that are no longer
needed or that can be safely deleted.

How to open Microsoft Disk Cleanup?

To delete temporary files:
• In the search box on the taskbar, type disk cleanup, and select Disk Cleanup from
the list of results.
• Select the drive you want to clean up, and then select OK.
• Under Files to delete, select the file types to get rid of. To get a description of the file
type, select it.
• Select OK.
If you need to free up more space, you can also delete system files:
• In Disk Cleanup, select Clean up system files.
• Select the file types to get rid of. To get a description of the file type, select it.
• Select OK.

Checking Disk Error

The Check Disk utility, also known as chkdsk (since that's the command you use to run it)
scans through your entire hard drive to find and fix problems. Chkdsk attempts to fix these
problems by repairing soft bad sectors, and marking hard bad sectors so they won't be used
again

Maintain equipment and consumables

Maintenance in an IT environment
Some items requiring maintenance in an IT environment would be:

• Printers- Printouts may be streaky or faded. The printer may need either cleaning or
new cartridge.
• Monitors- Fingerprints may make the text difficult to read.
• PC's- A PC may not boot correctly. In investigation required and possible reinstallation
of the operating system.
• Peripherals- A scanner or bar code reader may not be functioning properly.
• Floppy disk Drive- The system may not read floppy disks. The drive may need cleaning.
• Replacing paper- Printers, photocopiers and fax machines may run out of paper.

Precautions are guidelines to be followed to prevent damage to equipment or injury to

people. The following are very important precautions:
 • Before cleaning any electrical equipment make sure that it is switched off and
unplugged from the mains.
• Allow certain equipment, such as monitors and laser printers, to cool down and lose
their capacitance (charge) before cleaning them for at least 30minutes.
• When cleaning inside the PC, or handling parts from a PC such as hard disk or circuit
boards, you should earth yourself using antistatic wrist strap.
• Always refer to the manufactures manual before attempting to clean any equipment,
because improper cleaning or maintenance may be dangerous and also may invalidate
your warranty.
• Some equipment such as power supplies and monitors use voltages and therefore
should only be maintained by specially trained people. It could be dangerous for
anyone else to open these up for maintenance.

Cleaning in an IT environment.

Why clean?
Dust needs to be removed because it acts as an insulator that prevents air from circulating
over or through the components and this can cause overheating. If dust contains conductive
particles it can also cause a short circuit, which damage components or even cause a fire.
Removing Dust
Dust can be removed using a household vacuum cleaner with an appropriate attachment,
although it is much easier to use a purpose-built computer vacuum cleaner or keyboard
cleaner.
Residue from hands
The human skin produces residues that cling to surface of the computer hardware we touch,
which can be removed with liquid cleaners. However, use only specifically designed cleaners
for cleaning computer equipment. Unsuitable cleaners may:
Cleaning kits
The contents of kits vary, but generally kits include:
Item How is it used?
Small brush Or dusting components of electrical equipment
Antistatic grounding strap To earth yourself while cleaning inside a PC
Lint-free foam cleaning Are used with isopropyl alcohol, which is dabbed
swabs or buds (looks like on the bud and then used to clean such
cotton buds) components as the edge connectors on cards, the
contacts inside mice, and keyboards.
Cleaning wipes Are small lint-free cloths for cleaning the system
unit casing, monitor and keyboard
Contact cleaning solution Not only helps clean the edge connectors and
electrical contacts inside the PC but also helps to
promote reliable connections.
Compressed air Is used for blasting dust out of obscure corners
which might not be able to reach with a mini
vacuum cleaner.
Cleaning disks for 3.5 and Consists of an outer shell and replaceable inner
5 1/4 disk drives material on to which you put a few drops of special
cleaning fluid.
CD-Cleaning kit Cleans dust and grease from the CD. Also keep the
CDs in their cases, handle them by edges and
periodically clean them using the cleaning kit.
 Cleaning sheets for laser Are fed through the device in the normal way for
printers, plain-paper fax paper, but they remove toner, dirt and dust from
machines and the paper path, which improves the print quality.
photocopiers

Cleaning Peripherals Monitors

Carefully clean dust away from the vents in the monitor's enclosure using a vacuum cleaner.
If you use a spray to clean a monitor you should be careful to spray the wipe.

Printers
You will get the greatest benefit from cleaning a printer if you can remove any dust from the
paths of moving parts. To do this you may need to remove covers or paper trays.
Laser Printers
To clean laser printers:
• Switch off and unplug the printer, and wait at least 30 minutes for it to cool.
• Wear disposable plastics gloves.
• Clean the outer casing of the printer using a dampened paper towel or a lintfree cloth
with a little detergent on it.
• Check for, and remove any loose bits of paper.
• Vacuum inside the printer using a static-safe vacuum cleaner.
• Use a lint-free swab dipped in isopropyl alcohol to clean the corona wire.

Keyboards
The keyboard tends to not only accumulate a lot of dust and skin residue but also some hair
and lint form clothing. Loose matter can generally be removed with the vacuum cleaner.

Mouse
The mouse tends to accumulate a mixture of dust and skin residue from the surface it rolls
on.
Scanners and photocopiers
Use a lint-free cloth dabbed with whatever chemical the manufacture recommends to wipe it
clean.

Power Supplies
Maintenance for the power supply to PCs includes:
• Vacuuming dust from the vent holes
• Checking that the cables coming out of them are not worn or broken  Checking
that the power socket is clear of dust and dirt

Tape Drives
Because tape drives are usually used for backing up data, it is important that they are kept
clean, so that data is not corrupted by oils and other contaminants during the backup
process. You can purchase cleaning tapes, or you can usually use a lint-free bud.

File Maintenance
Four Types of Maintenance Strategy
1. Corrective maintenance. Maintenance is carried out following detection of an
anomaly and aimed at restoring normal operating conditions.
 2. Preventive maintenance. Maintenance carried out at predetermined intervals or
according to prescribed criteria, aimed at reducing the failure risk or performance
degradation of the equipment.
3. Risk-based maintenance. Maintenance carried out by integrating analysis,
measurement and periodic test activities to standard preventive maintenance.
4. Condition-based maintenance. Maintenance based on the equipment performance
monitoring and the control of the corrective actions taken as a result.

Backing up Files
Six ways to back up your data.
1. USB stick. Small, cheap and convenient, USB sticks are everywhere, and their portability
means that they’re easy to store safely, but also pretty easy to lose.
2. External hard drive External hard drives are just what they sound like – hard drives that
live outside your computer, meaning they can be plugged in to other sources. If using
them for backup, it’s best not to use them as an ‘extra every day hard drive’.
3. Time Machine- For the Mac users out there, Time Machine is an option that backs up to
external hard drives automatically. Apple sells its own brand of dedicated wireless Time
Capsules, but you can use any hard disk for it.
4. Network Attached Storage Businesses tend to back-up their files to network attached
storage, but with more and more homes having multiple computers, the idea has a
certain appeal, especially for those looking to save files from more than one source.
5. Cloud Storage While network attached storage is essentially your own Cloud Server,
there are plenty of third party cloud storage options around: free, paid, or free with paid
extras. iCloud, Dropbox, Google Drive and OneDrive are big names, but others are
available.
6. Printing At a first glance, this might sound a facetious inclusion. But while considerably
less technically advanced, printing offers you a hard copy of your most important
documents that will survive power outages, and are easy to store and access even if your
computer is out of action for a few days.

Deleting unwanted files

How to delete unnecessary files using Disk Cleanup

Disk Cleanup helps free up space on your hard drive. Disk Cleanup searches your drive, and
then shows you temporary files, Internet cache files, and unnecessary program files that you
can safely delete. You can direct Disk Cleanup to delete some or all of those files.

Updating anti-virus
Keeping your computer safe from viruses is extremely important, especially if your computer
connects to the Internet. Antivirus software can help you keep your computer safe, but only
if you keep its up-to-date. Use the steps on this page to make sure the antivirus program has
the newest information about viruses that might infect your computer.

What I Have Learned

Activity 4: Direction: Answer the following questions correctly and write them in your activity
sheet.
 1. A ________________maintenance is carried out following detection of an anomaly
and aimed at restoring normal operating conditions.
2. A _________________maintenance carried out at predetermined intervals or
according to prescribed criteria, aimed at reducing the failure risk or performance
degradation of the equipment.
3. A __________________maintenance carried out by integrating analysis,
measurement and periodic test activities to standard preventive maintenance.
4. A __________________maintenance based on the equipment performance
monitoring and the control of the corrective actions taken as a result.
5. A ________________ software can help you keep your computer safe, but only if you
keep its up-to-date.

What I Can Do

Activity 5: Direction: Answer the questions using the activity sheet.

1. Why do you need to have a preventive maintenance in an IT environment?

2. State the guidelines in maintaining equipment and consumables in IT to be followed to prevent
damage to equipment or injury to people.

Assessment

Direction: Read each question carefully. Choose the letter of the best answer. Write your
chosen letter on your activity sheet.
1. How often do we clean up Running Disk?
a. once a day
b. once a week
c. once a month
d. twice a month
2. What is the procedure in disk clean up?
A. know w/c drive you want to clean up
B. select the appropriate drive to click
C. check each of the boxes for clean up
D. open disk want to clean up

a. D,A,B,C
b. A,B,C,D
c. B,C,D,A
d. D,A,B,C
3. Why is it necessary to unplug electrical equipment before cleaning?
a. to be safe from breakage
 b. to avoid electric shock
c. to prevent current flow
d. to be safe from danger
4. what will happen, If dust contains conductive particles?
a. it can cause power shortage
b. it can minimize heat
c. it can cause short circuit
d. it can give problem
5. What is the first step in cleaning laser printer.
a. vacuum inside printer
b. switch off & unplug printer
c. wear disposal plastic gloves
d. use lint-free swab
6. It is also called the screen or monitor.
a. printer
b. scanner
c. hard disk
d. display
7. Which group consists of input devices only?
a. mouse, keyboard, monitor
b. mouse, keyboard, printer
c.mouse, keyboard, plotter
d. mouse, keyboard, scanner 8. What type of device is a digital
camera?
a. input
b. output
c. storage
d. software
9.Why is PowerPoint known as presentation application?
a. It transforms the signal from the computer's sound card into audio.
b. It uses slides to convey information rich in multimedia.
c. It is used in academic and research fields.
d. It is read by bouncing the laser beam off the surface of the medium.
10. What compact disc can be written once and read arbitrarily many times? a. CD-R
Disc
b. flash drive
c. hard disk
d. monitor
11. What is the best way to protect your hard drive data?
a. regularly make a backup.
b. periodically defrag it.
c. run chkdsk at least once a week.
d. run scandisk at least once a week.
12. What input device allows you to type the information into the computer?
a. mouse
b. monitor
c. keyboard
d. hard disk
13. Which of the following key combination will you use to save files? a. ctlr + S
b. ctrl + C
c. ctrl + V
 d. ctrl + P
14. It is a device used primarily to provide hardcopy.
a. CRT
b. computer console
c. printer
d. card reader

15. What type of computer devices are the speakers or headphones?

a. input
b. input/output
c. software
d. output

Additional Activities

Answer the following questions.

1.) What is the importance of a resistor in a circuit?

2.) State the characteristics of a resistor.
3.) Draw the electronic symbol of a different types of resistor.

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