Explanation

 A computer system consists of a:

computer case,

a power supply unit,

a motherboard,

a central processing unit ,

main memory,

and a hard disk drive.

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while:

Input devices include :

a keyboard,

mouse,

microphone,

video camera,

and image scanner.

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Output devices include:

a monitor,

speakers,

and a printer.

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RY 16-01-2023

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Explanation

Hard Disk is where data is permanently stored.

Unlike RAM and cache memory, which are volatile.

Hard disks retain data even when the computer is turned off.

Explanation

Charles Babbage is known as the Father of the Computer.

He was an inventor from the UK.

He was born in 1791.

He was died in 1871.

Explanation

Ctrl + N shortcut key used to Create a new presentation document

Ctrl + M shortcut key used for Insert a new slide

Ctrl + S shortcut key used to save a presentation

Explanation

A firewall is a security system that monitors and controls incoming and outgoing network traffic.

Its primary function is to prevent unauthorized access to or from a private network by filtering data based on security rules.

Explanation

Explanation

• Spam is another name for junk Email
• junk email refers to unsolicited email messages, usually sent in bulk to a large list of recipients.
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Computer important Information:

• E-mail stands for: Electronic Mail
• Father of E-mail: Ray Tomlinson

• First E-mail sent: 1971

• @ is used to divide an email into: two parts

• SMTP helps to send: E-mails

• SMTP stands for: Simple Mail Transfer Protocol

• Received email is saved: inbox

• Sent email is saved in: sent box

• Maximum attachment size in Yahoo Email: 25 MB

• G-mail stands: Google Mail

• Email spam also called: junk email

• To close email account click: sign out

• To create new E-mail: Sign Up

• Email hacking means: Illegal access to open email accounts of others

• Junk email is also called: Spam 

•  At sign (@): always a part of email address

• Sending an E-mail is similar to: writing a letter

• A allows us to access our e-mail from anywhere: Webmail interface 

• Bookmark:  is associated with Internet E-mail

Explanation

Firewalls provide protection against outside cyber attackers by shielding your computer or network from malicious or unnecessary network traffic.

Firewalls can also prevent malicious software from accessing a computer or network via the internet.

Explanation

ROM (Read-Only Memory)

• Stores non-modifiable data and instructions permanently.
• Non-volatile memory used for essential computer instructions.

RAM (Random Access Memory)

• Volatile memory used for temporary data storage.
• Supports active processes and operations on a computer.

Explanation

In a spreadsheet, the data is organised in columns and rows.