CSS-W1.3.-COMPUTER SYSTEM SERVICING FIRST QUARTER

OBJECTIVES
At the end of the Lesson the student
must be able to:
1. Identify different Storage devices.
2. classify the following Storage devices
according to their category; and
3. give the function of each Storage
devices.

Computer System Devices
OUTPUT
DEVICE
INPUT
DEVICE
STORAGE
DEVICE

1. Primary Storage Device
◼also known as main storage, refers
broadly to the methods and
technologies of storing data that must
be accessed frequently. Primary
storage includes both volatile primary
memory, such as RAM and DRAM

a. RAM
◼Also known as Random-access memory
◼is a form of electronic computer memory that
can be read and changed in any order, typically
used to store working data and machine code.

b. ROM
◼Read-only memory is a type of non-volatile
memory used in computers and other electronic
devices.
◼Data stored in ROM cannot be electronically
modified after the manufacture of the memory
device.

2. Secondary Storage Device
◼also known as auxiliary storage, refers
to the storage methods and
technologies used for the long-term
storage of non-critical data that doesn’t
need to be accessed as frequently as
primary storage. The goal of secondary
storage is to retain data until you
overwrite or delete it, meaning it
exclusively relies upon non-volatile
storage media such as HDDs and SSDs.

i. Magnetic Storage Device
◼one of the most popular storage devices used.
◼This technology is mainly used on incredibly
large HDDs or hybrid hard drives.
Examples:
a. Cassette tape
◼A magnetic storage device used to store and
replay the audio.

Examples:
b. Floppy disk drive (FDD)
◼A normal 3 1⁄2 inch disk can store 1.44 MB of
data.

Examples:
c. Zip Drive (ZD)
◼Similar to a floppy diskette but more
advanced and larger capacity.

Examples:
d. Hard drive
◼The main storage device on the computer is
the internal hard drive.
◼The external hard drive is also known as the
removable hard disc drive. It is used to
storing portable data and backups.

d. Hard drive
Examples:
1. Hard disk drive (HDD)
• is the main storage drive,
and usually largest, data
storage device in a
computer.
• The operating system,
software titles and most
other files are stored in the
hard disk drive.

d. Hard drive
Examples:
2. Solid State Drive (SDD)
• is a solid-state storage
device that uses
integrated circuit
assemblies to store data
persistently, typically
using flash memory, and
functioning as secondary
storage

ii. Optical Storage Device
uses lasers and lights as its data storage and
recovery mode.
Another common type of storage that uses lasers
and lights as its method of reading and writing
tool is an optical storage device.
Examples:
a. Compact Disc (CD)
◼also called optical disc or CD-ROM
◼is a nonmagnetic, polished metal disk used to
store digital information.

Examples:
b. Digital Versatile Disc
(DVD)
◼an optical disc technology
with a 4.7 gigabyte
storage capacity on a
single-sided, one-layered
disk, which is enough for
a 133-minute movie.

Examples:
c. Blu-ray disc
◼a hybrid optical storage
system intended to
replace the DVD format.

iii. Flash Memory Device
◼replaces the magnetic storage device because
it is cost-effective, more efficient, and more
reliable.
Examples:
a. Jump drive and USB flash drive
◼is a plug-and-play portable storage device
that uses flash memory and is lightweight
enough to attach to a key chain.

iii. Flash Memory Device
Examples:
b. Memory Card (MC)
• is an electronic data
storage device used for
storing digital
information, typically
using flash memory.
• These are commonly
used in digital portable
electronic devices.

iv. Online and cloud
storage
◼is becoming increasingly widespread as people
access data from different devices. Early
computers had no method of storing
information using any of the above technologies
and had to rely on paper. These forms of storage
are rarely used or found today.
◼People need to back up data, the safest way,
and the easiest way of storing data is through
online or cloud storage.

storage
Examples:
a. Cloud storage
◼Data is remotely
managed and made
available over the
network. Basic features
are free to use, but the
upgraded version is
paid monthly for each
consumption.

storage
Examples:
b. Network media
◼Audio, Video, Images,
or Text that are used
on a computer
network. A community
of people is creating
and using content
shared over the
internet.

Importance of storage
devices
◼A computer would not be able to save or remember
any settings or information without a storage device
and would be considered a useless terminal.
◼Through the advancement of technology, the
systems used to store data has higher storage space
requirements. Because people need more space,
they want it faster, cheaper, and portable, as new
technologies has emerged. Older devices became
obsolete because of invention of new designed
technology, which was upgraded to new devices.

ACTIVITY I
Identification of input devices
◼ Directions: Identify the following input devices and give its function.
Storage Devices Name & Functions

ACTIVITY II
Classifying Secondary Storage Devices
Secondary Storage
Device
Classification

ASSESSMENT
1. Which of the following is a non-volatile storage device?
A) RAM C) CPU Cache
B) Hard Disk Drive (HDD) D) Registers
2. What is the main advantage of Solid State Drives (SSDs)
over Hard Disk Drives (HDDs)?
A) Higher storage capacity C) Faster data access speed
B) Lower cost per GB D) More durable in physical shocks
3. Which type of storage is typically used to store data
temporarily while a computer is running?
A) Flash Drive C) RAM
B) SSD D) DVD

ASSESSMENT
4. Which of the following storage devices uses magnetic
storage technology?
A) SSD B) DVD C) HDD D) USB Flash Drive
5. Which storage device is most commonly used in
smartphones and tablets for storing apps and data?
A) Optical Disc C) SSD
B) HDD D) Flash Memory

CSS-W1.3.-COMPUTER SYSTEM SERVICING FIRST QUARTER

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