Explanation

A computer virus is a type of computer program that, when executed, replicates itself by modifying other computer programs and inserting its own code.

Explanation

An apostrophe before a cell value forces Excel to interpret the value as text.

This is mostly useful for values that look like a number or date.

Explanation

Control penal menage account of user

Explanation

A numeric keypad, number pad, numpad, or ten key, is the palm-sized, usually-17-key section of a standard computer keyboard, usually on the far right. It provides calculator-style efficiency for entering numbers

Explanation

A hierarchical database is a data model in which data is stored in the form of records and organized into a tree-like structure, or parent-child structure, in which one parent node can have many child nodes connected through links.

Explanation

Any process of arranging items systemically

Explanation

One gigabyte (GB) is equal to 1024 megabytes (MB).

So, there are 1024 megabytes in one gigabyte.

1024GB is the correct answer

Explanation

Automata theory is the study of abstract machines and automata, as well as the computational problems that can be solved using them. It is a theory in theoretical computer science. The word automata (the plural of automaton) comes from the Greek word αὐτόματα, which means "self-making".

Explanation

Apple has developed a series of Macintosh operating systems.

The first versions initially had no name but came to be known as the "Macintosh System Software" in 1988, "Mac OS" in 1997 

Explanation

the integrated circuit is a set of electronic circuits on one small flat piece of semiconductor material, usually silicon.