Subscript is the text which a small letter/number is written after a particular letter/number. It hangs below its letter or number. It is used when writing chemical compounds. An example of subscript is N₂.

Superscript is the small letter / number above a particular letter / number. An example of superscript is 2⁵. The number 5 above the number 2 is an example of superscript. Superscript can be used for exponents in mathematics.

Communication is the imparting or exchanging of information by speaking, writing, or using some other medium.
Features of an effective communication system:
1.Principle of clarity, i.e., every point in the communication should be clear having no ambiguity and conveying the same sense and spirit.
2. Principle of attention, i.e., Communication must draw attention of the communicate.
3. Principle of consistency : This principle implies that communication should always be consistent with the plans, objectives, policies and programmes of the organization and not conflicting. Inconsistent messages always create chaos and confusion in the minds of people which is highly detrimental to the interest of the enterprise.
4. Principle of Adequacy : This implies that the information should be adequate and complete in all respect. Incomplete and inadequate information delays actions and destroys understanding and relations. Efficiency of communicator and communicate is also affected.
5. Principle of Integration : Communication is a means to an end and not an end in itself. It should promote co-operation among people at work to achieve the organizational objectives.
6. Principle of Timeliness : Information of ideas should be communicated at the proper time. Any delay in communicating the messages will serve no purpose except to make them (messages) mere historical documents as they lose their importance and effectiveness by the lapse of time.
7. Principle of Informality : Formal communication, however is important in a formal organization but informal communication does not lose its place in the organization. Managers or executives should become much informal in their behaviour with his subordinates. But in certain situations where they are the sole and best judge, informality may be avoided.

I will suggest Google docs since it is the best and easiest tool to learn and perform basic data entry works.  

Explanation:

• Google provides us the benefit of Google docs which is free to use. We can work on documents, sheets slides and forms.

• We can write, edit, modify, update and delete any document and can maintain the same for data entry work.

• Some more tools or software are also available which are considered to be good for the data entry work such as unibase, wintask, adobe acrobat pro dc, power pdf, AutoEntry, etc.

Typing ergonomics is the science of preventing common workplace injuries by using proper posture and stretching techniques when at the computer.

The main role of the typing ergonomics is to reduce the stress and strain in the joints and also helps to reduce the muscle strain related various types of problem. it basically define the workplace according to the user requirement.

It aim is to increase the productivity and also efficiency by reducing the discomfort of the user. It basically manage the angle and height by properly monitoring the computer system desk.

A slide is a single page of a presentation. Collectively, a group of slides may be known as a slide deck. A slide show is an exposition of a series of slides or images in an electronic device or in a projection screen.

The most suitable storage medium for storing an encyclopaedia is database.

• Primary memory is the main memory of the computer system. Accessing data from primary memory is faster because it is an internal memory of the computer.
• Types of Primary Memory 1) RAM, 2) ROM

Standard Toolbar : Contains tools for standard tasks, like saving, printing, cutting, copying, pasting, etc. Formatting Toolbar : Provides tools for formatting like bold, italic, underline, etc.

View Buttons : Provides options to switch between Normal, Web Layout, Print Layout, Outline and Reading views.

A mouse is an input device that is used on a computer. The following are basic operations used in mouse.

• Left Click - The left mouse button is used for object selecting and double-clicking.
• Right Click - The right mouse button mostly used to open pop-up menus which perform specific function when selected by the right-click.
• Double-click - Used to open objects, such as a file, icon.
• Drag - Used to move the selected object to the desired position.
• Scroll - Used for Scrolling up and down on a webpage or document.

Home keys: Alphabets ASDF are home keys for the left hand and; (semi-colon) LKJ for the right hand. The fingers are trained to make the correct movement to other keys and each finger returns immediately to its respective home key after it has depressed the corresponding key in any other row

Guide keys: On a computer keyboard, keys ‘F’ and ‘J’ are called guide keys for left and right hand, respectively. Both contain a small raised tangible mark with the help of which the touch typist can place the fingers correctly on the home keys.

Internet safety or online safety or cyber safety or E-Safety is trying to be safe on the internet and is the act of maximizing a user's awareness of personal safety and security risks to private information and property associated with using the internet, and the self-protection from computer crime.

A spreadsheet is a configuration of rows and columns. Rows are horizontal vectors while columns are vertical vectors. A spreadsheet is also known as a worksheet. It is used to record, calculate and compare numerical or financial data. Each value can either be an independent (i.e. basic) value or it may be derived on the basis of values of other variables. The derived value is the outcome of an arithmetic expression and/or a function (i.e. a formula). Spreadsheet application (sometimes referred to simply as spreadsheet) is a computer program that allows us to add (i.e. enter) and process data. We shall understand spreadsheet with the help of MS-Excel (or simply, Excel), which is one of the Microsoft Office Suite of software