Describe various kinds of key groups in keyboards


Keyboard is an input device used to enter text, numbers and many more symbols and commands into the computer system.

Standard Keyboard Layout:

Keyboard comes in many styles or layouts. The various models differ from shape, size and feel. Among the IBM compatible computers, the most common keyboard layout is the IBM Enhanced Keyboard. It has about 100-104 keys on it. There are six groups of keys.

Differetiate between disk and diskette drives

Differences between disk and diskette drives:

The differences between disk and diskette drives are as follows.

How the computer accepts input from the keyboard?

Accepting Input from Keyboard:

When we press a key, a tiny chip in the keyboard called keyboard controller notes that a key has been pressed. Keyboard controller places a coed in the buffer of the keyboard to indicate which key was pressed. Keyboard buffer is a temporary memory of the keyboard controller. The keyboard controller sends a signal to the system software notifying that something happened at the keyboard.

"Keyboard is considered as an input device" - why?

Input Device:

As it's name implies, input devices are devices which can send signals to the CPU. That means, the device we use to send or enter a signal or data to CPU are called input device, such as; keyboard, mouse, microphone etc.

Describe the basic four parts of computer

No matter how big it is or how it is used, every computer is a part of a system. A complete computer system consists four basic parts, such as; (a) Hardware (b) Software (c) Data (d) User

Write short notes on desktop computers, workstations, notebooks, tablet PCs, handheld PCs and smart phone

Desktop Computers:

The most common type of computer is desktop computers. It has been designed to sit on a desk. Today's desktop computers are much more powerful than the others and used for an amazing array of task. Not only do these machines enable people to do their jobs with greater ease and efficiency, but they can be used to communicate, produce music, edit photos and videos and play sophisticated games and much more.

What do you mean by modern computer?

Modern Computer:

In basic terms, computer is an electric device that process data, converting it into information which is useful to people. Any computer regarding of its type is controlled by programmed instructions which give the machine a purpose and tell it what to do.

The word 'computer' comes from the word 'compute' which means nothing but to calculate something. Computer can perform calculations with accuracy beyond human reach.

Compare between the working procedure of a computer and a human being

Comparison Between the Working Procedure of a Computer and a Human Being:

There are some similarities between the working procedure of a human being and a computer. The main deference is that human has a sense using which it takes decisions and perform a task by itself, whereas a computer need instructions or data to perform a task.

Otherwise, both of them work through a similar way. Such as first of all these take input and then processes the input to generate output (if necessary).

Differentiate among the different types of digital computers in respect of their size, cost and working efficiency

There are 4 kinds of digital computers in respect of their size, cost and working efficiency;such as (a) Microcomputer (b) Minicomputer (c) Mainframe Computer and (d) Super Computer

"Computer can be classified into 2 or 3 ways depending on it's implementation or working principle" - Explain

Depending on implementation computers can be classified into 2 ways, such as, (a) General Computer (b) Special Computer

What is Software Piracy or Copyright Infringement of Software? What should be done to prevent software piracy?

Software Piracy or Copyright Infringement of Software:

Using, modifying, distributing, selling a software without proper license or permission or right is termed as software piracy. A software should only be used as per its license. When a software is covered with copyright laws and gets used in a way that violates one or more conditions, then this use of the software is a copyright infringement of software and this is software piracy.