Explanation

 A real-time operating system  is an operating system  intended to serve real-time applications that process data as it comes in, typically without buffer delays. 

Explanation

Operating System: system software that manages computer hardware & software resources.

Explanation

The link pointer looks like a hand with a pointing finger.

The link pointer will only show up when there is a link to follow.

Explanation

Ctrl+H is used to find and replace text in a file.

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 Landscape is a horizontal orientation mode used to display wide-screen content, such as a Web page, image, document or text.

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Table in database must have a primary key.

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Computer RAM is essentially short term memory where data is stored as the processor needs it.

RAM: Random Access Memory

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Computer memory is of two basic types.

Primary memory(RAM and ROM) and Secondary memory(hard drive,CD,etc.

Explanation

Source code is the set of instructions written by a programmer using various programming languages. Source Code is generally written in English though it may vary from one computer to another.

Explanation