The policeman

The policeman is a useful government servant. He wears black shirt ad khaki pant. He ties a belt round his waist and keeps a black cap on his head.
The policeman is responsible person. He is responsible for keeping law and order in the locality. He is the guardian of the life and property of the people. He arrests thieves, smugglers and criminals. In his absence there is no place for the poor or weak.
The policeman performs his duty everywhere. There is not a single place where he cannot go. In big cities he can be seen controlling the traffic. He can be seen at railway stations, bus stands, banks and post offices. He performs his patrol duty on all roads and bazaars. He goes where there is a gathering.
It is a fact that policeman is usually rude. He is uneducated. Gentlemen are treated harshly by him. He considers poor people as animals. He gives preference to himself because he has stick with him. He has no pity of others. Receiving bribes is his common practice.
The job of a policeman is very difficult. He is on duty round the clock. He puts his life in danger while fighting against criminals, as he gets a small salary, his standard of living is low. It is very difficult for him to support a large family with that little income. The government should pay attention to the life of a policeman. His salary must be increased so that he may not be compelled to receive bribes.

Posted By: Wasim Javed

The postman

The postman is a well-known person. He wears is khaki uniform and rides on the bicycle. He has khaki leather bad which he places on the carrier of his bicycle.
The postman is very dutiful. He performs his duty in all weathers. He goes to the post office early in the morning and puts letters, parcels and money order in the bag. In order to deliver these letters, parcels and money orders to the concerned persons, he goes from house to house, from shop to shop and from office to office. Everyone waits him eagerly. He brings sad as well as happy news to the people.The postman is always a poor person. His job is very difficult but his pay is very small. His holidays are limited. There are no chances of promotion in this profession. He leads a very life. In villages, he has to walk many miles on foot. In cities he delivers his mail by riding on an old bicycle. The nature of his duty is such that the postman must be strong and healthy. He mus be active, polite, honest and punctual.

Posted By: Wasim Javed

Our School Peon

Ajab Noor is the peon of our school. He is a young man of thirty years. He is strong and healthy. He is very active and smart. He has been working in this school for the last ten years.
He is very punctual and obedient.He comes to school early in the morning. He opens the Principal's office and cleans the chairs. Then he opens the classrooms and cleans the chairs and the blackboards. He sits in front of the Principals office. He rings the bell after each period. He carries the Principals orders to the teachers. He distributes letters among the teachers ans students. He shuts the windows and doors when the school is over.
Our school peon has good habits. He wars simple and neat clothes. He always speaks the truth. He is like by the students as well as by the teachers. The principal of the school is very pleased with him.
In short, it is said that our school peon has a lot to do. He is a poor person. His pay small and it is difficult for him to make both ends meet.

Posted By: Wasim Javed

How a computer works/ Computer working steps

following are the basic operations used for working of a computer.
a) Input operation: The process of receiving data from input devices of computer is called input operation.
b) Processing operation: The process of performing different operations on existing data is called processing operation. e.g when a computer perform addition of two numbers it is called processing.
c) Storage operation: The process to store data / information in storage devices is called storage operation. Storage devices are, floppy disks, hard disks, CD/DVD and flash disks.
d) Output operation: The process to display information on the screen (monitor) or print on paper is called output operation. The output obtained on monitor is called soft copy and the output on the paper is called hard copy using the printer.

Posted By: Wasim Javed

Output devices of computer system

The output devices are give the result either in audio or video form.The output devices of computer system are:
1) Monitor: The monitor is an output device which is used to display information. It looks like TV. Monitor are into two types LCD and CRT.
2) Printer: A printer is also a output device , it receive the information to the computer and prints the data on the paper.Or its provide the hard copy.
3) Speaker: It is also a output device, which give the output in the form of audio.
Communication parts: Communication parts are used to communicate each other with the help of modem, fax machine etc.

Posted By: Wasim Javed

Storage devices of computer system

Storage devices are used to store data / information. These are some storage devices.
1) Floppy Disk:
*The floppy have limited capacity of storage.
* These are relatively slow.
* These are less reliable than hard disk.
2) Hard Disk: We can store huge amount of data in one hard disk. e.g we can store large amount, Thousand of books of one library can store in one Hard disk.
3) CD/DVD: Cd/ Dvd is the most popular and the least expensive type of optical disks.
4) Use flash memory: Usb stands for universal serial bus. It is a kind of portable storage device.

Posted By: Wasim Javed

Parts of the system unit/ Parts of the Computer system

System unit/ Computer system: It is unit that connects all hardware of computer system inside system unit. System / computer system can be further divided into three sub-units. These are processor, Motherboard or system board and memory.
1) Processor: The processor or central processing unit (CPU) is the 'Brain' of the computer system. It supervises and processes all operations of computer system.
2) Motherboard: The motherboard is one the main components of computer system. All hardware devices are attached directly or indirectly with mobo. The motherboard allows various hardware components to transfer data/ information to each other.
3) Memory: Memory is used to store. There are tow types of primary memory.
RAM(Random Access Memory)
ROM(Read Only Memory)
a) Ram (random access memory): It is read only memory. Ram is known a volatile memory because and information stored into it is finished when computer is switched off.
b) Rom (read only memory): A read only memory is one in which information is stored permanently. When computer is switched off, the information inside the Rom is not lost and hence it is also called a non-volatile memory. Rom is fixed on motherboard of computer system.

Posted By: Wasim Javed

Input devices of computer

1) Keyboard: It is an input device which contains several keys. some properties of keyboard are:
* It is common input device.
*It convert letter into electronic signals.
*Its shape is like typewriter.
* It consist of number keys, alphabetic keys,function keys and special function keys.
2) Mouse: Mouse is a pointing input device. Some properties of mouse are:
* It is quick input device.
* It contains two or three buttons.
*It also has a scroll button.
3) Scanner: Scanner is a device used to feed picture to the computer. Some properties of scanner are:
* It is like photocopier machine in shape.
* It is capable of recognition of character and picture.
* It uses laser beam.
4) Microphone: A microphone is a device which allows you to record sounds and saves them into computer. Microphones can also be used with other application such as a voice dictation program or a voice conference program.
5) Digital Camera: A digital camera is used to take pictures/videos and then stores these into computer memory or memory card.

Posted By: Wasim Javed