Storage device

Internet and Internet and Computing Computing

Fundamentals IFundamentals I

Learning Objective: Identify the Types and Purposes of

Storage Devices

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Review

Name the following devices. Identify what type of device is it.

Keyboard

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Review

Name the following devices. Identify what type of device is it.

Printer

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Review

Name the following devices. Identify what type of device is it.

Scanner

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Review

Name the following devices. Identify what type of device is it.

Speaker

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Review

Identify the following devices. Identify what type of device is it.

Monitor

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Brain

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Notebook

Human Storage

COMPUTER

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Input

HUMAN

Lesson Data

Process Brain CPU

Output Learning Audio/Visual

StorageBrain/ paper Primary/Secondary

Storage

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What is a Storage Devices?It is a hardware device capable

of storing information

A term used to describe any location where information can be held permanently or temporarily for later use.

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What are the two types of Storage Devices?

Primary Storage

Secondary Storage

* Hard Drive* Off-line Storage

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What are the two types of Storage Devices?

Primary Storage

Secondary Storage

* Hard Drive* Off-line Storage

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Primary Storage DevicesAlternatively referred to as internal

memory ,main memory, primary storage is a storage location that holds memory for short periods of times while the computer is on. For example, computer RAM and cache are both examples of a primary storage device. This storage is the fastest memory in your computer and is used to store data while it's being used. For example, when you open a program data is moved from the secondary storage into the primary storage.

RAM and ROM are the Primary Storage of the Computer

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Primary Storage Devices

• ROM –• Read Only Memory.• Permanent memory.• Non-volatile memory.• Can’t be edited.• Stores important

program from system software, regarding functioning of computer. (Booting)

• RAM – • Random Access

Memory.• Volatile memory.• Temporary memory.• Holds data up to saving.• Bring required

programs when user opens a file.

Primary Storage Devices

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Secondary Storage Device

Alternatively referred to as external memory and auxiliary storage, secondary storage is a storage medium that holds information until it is deleted or overwritten regardless if the computer has power.

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Hard Disc

• Hard disc – Essential part of a computer.• Useful to store system, all application software,

drivers, data and information.

Internal hard Disk External hard Disk

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Secondary Storage DeviceOffline Storage Device:

This are magnetic device used to store information which can be detached from the computer unit.Examples :

1.Optical Disc2. Magnetic Device3. Mass Storage Device

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Secondary StorageOptical Disk

1.Optical DiscAn optical disc or optical disk is

any disc that is read by light.Examples:

Compact Disc (CD) Digital Video Disc (DVD)

Blu Ray (BD)

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OPTICAL DEVICES- CD/DVD/BRD

Type Write Edit Re burn

R- Recordable Yes No Limited

RW- Rewritable. Yes Yes Yes

ROM – Read Only Memory.

No No No

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Use of Optical Devices

• CD/DVD/BRD (R) – To store data permanently.

• CD/DVD/BRD (RW) – to store data temporarily, to carry data.

• CD/DVD/BRD (ROM) – use to store software, educational program, movies, drivers, games etc.

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Secondary Storage DeviceOffline Storage

Offline Storage Device:This are magnetic device used

to store information which can be detached from the computer unit.Examples :

1.Optical Disc2. Magnetic Device3. Mass Storage Device

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Secondary Storage DevicesOffline Storage Device

2. Magnetic Device-stores data in as much the same way as music is recorder on casette tapes or stereo record.•Example:•Floppy disk•Alternatively referred to as a floppy, a floppy diskwas originally created in 1967 by IBM to help have an alternative to buying hard drives that were extremely expensive at the time and were not thought of as something to be used with a standard computer

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Secondary Storage Devices

Offline Storage Device3. Mass Storage Device Storage Device that can be detached from the computer. Example:

USB- Universal Serial BusMemory Card

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USB

Summary

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Storage Device are device we used to store process information. They may be primary or secondary storage devices

Primary storage devices are those storage which are part of the computer. Computers will not be able to run without it. Primary memory are the RAM and ROM.

Secondary storage devices are those storage which can be taken out of the computer. They may be an optical disk, magnetic disc or mass storage device.

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Assessment

1.What is a storage devices?

3. What are the different type of optical disk?

2.What are the two types of storage device?

Quiz Proper

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A.Give the meaning of the following:

1. VCD

2. DVD

3. BD

4. USB

5. ROM

volatile

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Volatile memory is memory that loses its contents when the computer or hardware device loses power. Non-volatile memory is memory that keeps its contents even if the power is lost