Computer Key Board Shortcuts

By using the Computer keyboard shortcuts we can do our work faster. so we need to know the all computer shortcut keys commands. For your convenience i am giving details about some keys below.

1. Copy  Ctrl+c
2. Paste Ctrl+v
3. Undo Ctrl+z
4. Quick switch between open windows  Alt+Tab or Alt+ Esc
5. Print page Ctrl+p
6. For Space press Tab
7. Select all content Ctrl+A
8. Goes to End of the Document  Ctrl+End
9. For begining of the Line  Home
10. For end of the line  End

Memory devices in computer

 Memory in Computer:

Computers are useful to receives the data ,stores the data,process tha data.these operations can be done using  4 functions.those are:memory,processing,input and output.

Memory:

The physical devices which are used to store the sequence of instructions is known as memory.

 

Computer Generations

Based on the computers technological development computers can be classified as different type of generations.These generations of the computers defined how the computers developed technologically.

1. First generation Computers(1940-1956)

In this generation computers are developed by vacuum tubes for circuitry and memory . This type of computers are very big size, nearly occupies one room. For run this computer more electricity is required and this computer will generate lot of heat . This generation computers were worked on machine language is nothing but low level language which is understood by computers. And this type computers are very slow, they can't do multitasking, this computer solve one problem at a time For this computers Input is punched cards and paper tapes, the output will be display on the printout.
Example For First generation Computers are UNIVAC and ENIAC.

2.Second generation Computers((1956-1963)

In second generation computer,Transistors are used in place of vacuum tubes.transistor is prepared with semiconductor material.it amplifies a signal or it may opens or closes a circuit.it is invented in Bell labs in 1947.Transistor is a key for digital circuits.Digital circuits are used in vacuum tubes,but it had many disadvantages.they were very large and it required more energy to process,and releases more heat,and were more prone to failures.after invention of transistors,all these problems are solved.computing is very easy with transistors than vacuum tubes.Transistors are invented in 1940's but in 1950's it is came into work at widespread.they are small in size,and cheaper than vacuum tubes,more reliable.

3.Third generation Computers(1964-1971) 

Third generation computers are designed with Integrated circuits.they are placed on silicon chips called semi conductors.it increases the speed of the system.In this generation,users interact with the system through keyboards and monitors and interfaced with operating system.with operating system,device can run many different applications at one time with central program that monitor the memory.
Power consumption was very low in this generation. SSI & MSI technology was used.High level languages were used in this generation.

4.Fourth generation Computers(1972-present)

  In the first phase of this generation Very Scale Integrated Circuits (VLSI) are used.semiconducting material is replaced in the place of magnetic core memories.but in the second phase micro processor speed is increased and memory size is also increased.pentium,power PC etc are used In this generation.Portable computers are developed,RAID technology was used for the data storage.data communication is also started through computers.different types of memories are came into applicable with high speed& storage capacity.In 1981,IBM developed first computer for personal use.

5.fifth generation Computers(present-beyond)

    This generation computers are based on Artificial Intelligence.voice recognition was the best application of this eneration.parallel processing and super conductors are used to make AI a reality.In this generation devices are developed that are sed to respond to the natural language input and to learn self organition.it is used in intelligent robots and used for super conductors.

 These all about the generation of computers......

How to Remove Babylon Search From Firefox

To remove Babylon search from your firefox please follow the steps.

Open Mozilla Firefox , in the location bar type about:config 

after that you will get below screen , click on the button, will get the other screen

In the search filter type babylon, it will display all the results.
Now replace the URL WWW.Google.com or whatever you want.
restart your Firefox browser .

Happy browsing....Thank you...

What is computer Mother Board

Computer mother board is a main circuit board. This mother board contains chips, transistors , circuits etc.

Mother Board plays an important role in computer. without mother board computer can not work.Typically mother board composed with the CPU, memory units, Storage, BIOS, Different ports and slots, Registers etc...

Different names for motherboard are mobo,Main board, system board, circuit board, planner board , logic board etc...

we can also defined as mother board is printed circuit Board. This mother board provide different electronic circuits or connections to other components, which are used for system communication. , and its also connects to the Central Processing Unit(CPU). Every component or device that should be connect with the mother board. We can call mother board is a "back bone of the system".

What is Computer Software

Computer software is defined a the collection of instructions and code that is installed in the computer.
without any software computer can not work. we have to clear idea about software and hardware, hardware is touchable whereas software cannot be touchable. 

Computer Hardware

Computer hardware

Computer Hardware is nothing the physical components which are visible to us or which are touchable.
like keyboard, monitor, mouse , printer, CPU, Scanner, Mother Board etc....It refers to the physical components.
Monitor:
Monitor is used for display the output

Key Board:
Key board is used for enter the data .

Harddisk:

HardDisk is used for store the data

Computer basics

Computer

What is a Computer?

Computer is an electronic device which is used to process the data and stores the data.Computer has ability o store data, process the data and fetch the data. Now a days computers usage is common in every sector. we are using the computers in my situations in our daily life, like banking , healthcare, Colleges, corporate organizations, defense etc etc.....so we need to learn the basics of the computer. computer knowledge is essential now a days. By using the computer we can do everything. Computers makes daily life easy and  fast.

By using the computer we can do major calculations, documents, sending mails, inter net browsing etc...