Explanation

LAN which is local area network is used to refer to a small single-site network.

LAN stands for Local area network.

Explanation

The modem is a device that transforms computer-generated digital signals into analogue signals to enable their travelling through phone lines.

The 'modulator-demodulator' or modem may work as a dial-up for LAN or connect to an ISP.

Explanation

• Essential business letter components are: Date And Address,  Message And Signature
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• Essentials of a Business Letter: ...
• (i) Letter Heading: ...
• (ii) Name and Address of Addressee: ...
• (iii) Salutation : ...
• (iv) Introductory Paragraph: ...
• (v) Body of the Letter: ...
• (vi) Closing paragraph: ...
• (vii) Subscription :
• SH4-9-2023

Explanation

Changing the appearance of the document is called: formating 

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 formatting means changing or improving the appearance of text.

 An Editing. Making changes to the already existing document 

SH4-9-2023

Explanation

In computer programming, a function prototype or function interface is a declaration of a function that specifies the function's name.

Explanation

The basic digital electronic circuit that has one or more inputs and single output is known as Logic gate. 

Explanation

The long-distance carrier system provided in the United States of America and throughout the world is designed to transmit voice band signals over high-capacity transmission links, such as coaxial cable and microwave systems. 

Long-distance coaxial cable systems were introduced in the United States in 1946

Explanation

The UNIVAC was the first commercial computer delivered to a business client, the U.S. Census Bureau in 1951.

Explanation

The 1950s saw the birth of the computer industry with two companies, Sperry and IBM, dominating the marketplace.

Sperry: 1955

IBM: 1952

Explanation

Structure: The way in which the components are interrelated.

Function: The operation of each individual component as part of the structure.