Subject: Computer

Explanation
There are two types of storage devices used with computers: a primary storage device, such as RAM, and a secondary storage device, such as a hard drive.

Explanation
The CPU performs basic arithmetic, logic, controlling, and input/output (I/O) operations specified by the instructions in the program.

Explanation
In cryptography, encryption is the process of encoding information. This process converts the original representation of the information, known as plain text , into an alternative form known as cipher text .

Explanation
Optical mark reader  is a method of entering data into a computer system. Optical Mark Readers reads pencil or pen marks made in pre-defined positions on paper forms as responses to questions or tick list prompts

Explanation
First electronic digital computer called the ENIAC during the years  1943-1946,    ENIAC based on the prior invention of a small, special-purpose vacuum .

Explanation
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Explanation
Dragging is used to move an object from one position to another position on the computer screen.

Explanation
PowerPoint= presentation1  Excel= Book1  Word = document1

Explanation
 cell range using the cell addresses of the first and last cells in the cell range, separated by a colon. For example, a cell range that included cells A1, A2, A3, A4, and A5 would be written as A1:A5.

Explanation
On the Data tab, in the Data Tools group, click Text to Columns. The Convert Text to Columns Wizard opens. Choose Delimited if it is not already selected, and then click Next. Select the delimiter or delimiters to define the places where you want to split the cell content.