E2

Internal Hard disk

Internal hard disk

are the most common storage devices for computers..

Hard disks store data in a relatively permanent form , they will retain information that has been written to the disk when there is a power failure

Data is stored magnetically as a series of 0's and 1's on hard circular metal platters

USB Flash Drive

Data storage device with a USB connector.

USB flash drives are removable and rewritable , and most weight less than 30g.

storage capacities typically range from 2 GB TO 256

Online File storage

an Online file storage service is an internet hosting service specifically designed to host static content , typically large files that are not web pages

online storage is a cost-effective and practical option

Online File storage

What is a Network ?

Network

A network is formed where 2 of more computers are connected to each other so that they can share resources such as printers and scanners , exchange files or allow electronic communication securely.

Internet

The internet is a global network of linked computer networks that allows people worldwide to share information and to communicate electronically .

The internet is a network of networks, rather than a single vast network of individual computers all connected in the same was

Internet

VPN

Virtual Private network (VPN)

A VPN is a private network that uses a public telecommunication infrastructure , such as the internet to provide remote offices or individual users with secure access to their organization network

The Main Purpose is to provide a secure and reliable private connection between computer networks over an existing public network such as internet

Firewall

Firewall

A firewall is a device , hardware or software that guards access to a private network or computer , keeping unauthorized or unwanted network traffic out . it is a security barrier

Malware

Malware is short for Malicious software and is a general term for any software which cause damage , gather sensitive information or gain access to a single computer , server or computer network without the user knowing it

Malware

Malware is sometimes used against government or corporate websites to gather guarded information or to disturb their operation in general.

Malware is often used against individuals to gain personal information such as bank or credit card number. malware includes viruses, worms , Trojan horse and spy-ware

how malware can infect a computer or device.

How Malware can infect a computer

• Not installing and regularly updating a reputable anti-virus application.
• Opening an infected email attachment.
• Copying files from USB flash drives or other storage devices containing malware to a computer and thus infecting the system.
• Installing a free application or shareware application on a system,
• Visiting compromised websites which will try to run malicious code. Malware can come as website pop-ups that claim your computer is infected with viruses.
• Downloading infected applications or files on a network.

E-Trash or E-Waste

E-Trash

E-Waste

E-trash or E-waste is discarded electronic parts or components , whether they are broken or merely out-dated.

it is sometimes cheaper to buy a new electronic device such as a cell phone or computer than repair

as result an enormous number of computer and electronic devices are trashed.

These devices contain toxic materials such as lead , cadmium and mercury which can contaminate the environment

Accessibility Enhancement options

there are various types of applications that helps users to copy with the difficulties of operating a computer or just make it easier to use a computer

Accessibility Enhancement options