software

Software & Hardware

Software is a set of instruction that tells a computer what to do. A computer works according to the instruction written in the software.

The physical parts of a computer are called Hardware. The user can see and touch hardware. Keyboard and mouse are example of hardware.

Relationship Software & Hardware

Software is a set of instructions that tells the computer hardware what to do. The hardware cannot perform any task without software. The software cannot be executed without hardware. A computer becomes useful only when hardware and software are combined.

Difference between software and hardware

The difference between software and hardware is as follows:

Software Hardware1. Software is a set of instructions that tell

a computer exactly what to do.1. Hardware is physical parts of computer

that cause processing of data.2. Software cannot be executed without

hardware.2. Hardware cannot perform any task

without software3. Software cannot be touched 3. Hardware can be seen and touched4. Software is debugged in case of

problem.4. Hardware is repaired in case of problem

5. Software is reinstalled if the problem is not saved.

5. Hardware is replaced if the problem is not solved

The physical parts of a computer are called hardware. Monitor, keyboard, mouse, CPU, RAM and printer are examples are hardware.

Keyboard is the most commonly use input device. Data is mostly entered using a keyboard. The buttons on the keyboard are celled keys. A standard keyboard contains over 100 keys. A keyboard contains numeric keys, alphabetic keys, function keys and special-purpose keys. A standard keyboard is normally called QWERTY keyboard. This is because the first six keys on the top row of letters on these keyboards are Q, W, E, R, T, and Y.

Main parts of a keyboard

The keyboards in most personal computers have the following main parts:

1. Function keys2. Main keyboard (in the center)3. Numeric keys (to the right)

4. Additional keys

Mouse is the most widely used pointing device. It is a small, lightweight input device. Mouse is moved on a flat surface to control the movement of the cursor (pointer) on a screen. The mouse is attached to the computer by a cable or wireless connection. A mouse usually has two or three buttons. These buttons are used to perform different task.

Display screen/monitor

1. Working of CRT Monitor2. Flat Panel Display

CRT Monitor

Cathode Ray Tube (CRT) monitor is the most common form of display screen. It took likes television. It can display text and graphics.