Explanation

The touch screen is an Input device and an Output device. 

Not only is it capable of accepting input, but it also displays the output from the computer.

Explanation

The hard disk was invented on September 13, 1956, by an IBM team led by Rey Johnson

The commercial usage of hard disk drives (HDD) began in 1957

Rey Johnson (considered as “father” of the disk drive).

A computer hard disk drive is a non-volatile data storage device.

Hard Disk is an example of Magnetic Storage

Explanation

In MS Word, indenting paragraphs allows users to set text within a paragraph at different margins.

Explanation

Keyboard is an input device.

Keyboard is similar to electric typewriter.

Keyboard uses serial port to connect with computer.

Keys on keyboard are of mainly three types:

Alphanumeric keys: letters and numbers 

Punctuation keys: comma, period, semicolon, etc.

Special keys: function keys, arrow keys, caps lock key, etc. 

Explanation

A firewall is a software or firmware that prevents unauthorized access to a network.

A firewall inspects incoming and outgoing traffic using a set of rules to identify and block threats.

Explanation

USB stands for Universal Serial Bus

It is a standard interface for connecting computer peripherals, such as keyboards, mice, printers, and external hard drives.

Explanation

The active cell displays the results of its formula while we see the formula itself in the Formula Bar. 

Explanation

آپریٹنگ سسٹم کمپیوٹر یوزر اور کمپیوٹر ہارڈویئر کے درمیان ایک انٹرفیس ہوتا ہے۔

Explanation

A super key is a set of one or more attributes (columns), which can uniquely identify a row in a table.

Explanation

DOS stands for disk operating system

CD stands for Compact Disk. 

The CD command is a command-line shell command used to change the current working directory in various operating systems. 

AGM 24-12-2022