Introduction to Computer

What is computer?

Computer is an electronic machine that we used to calculate data and solve problems.

When someone says the word "Computer", you may think of a machine the looks like this......

A computer is an electronic machine which process raw data (input) into meaningful information (output), and also stores output for later use.

A is an electronic device, operating under the control of instructions stored in its own memory that can accept data  (input), process the data according to specified rules, produce information  (output), and store the information for further use.

*Functionalities of a Computer:

1. Takes data as input.

2. Stores the data in it's memory and use      them when required. 

3. Process the data and converts it into useful information.

4. Generates the output.

5. Controls all above four steps.

*PC (Personal Computer)

PC is a shortened form for a Personal , it is otherwise called a Microcomputer. Its physical qualities and minimal effort are engaging and helpful for its clients. The capacities of a PC have changed incredibly since the presentation of electronic PCs. By the mid 1970s, individuals in scholarly or explore organizations had the open door for single-individual utilization of a PC framework in intuitive mode for broadened spans, in spite of the fact that these frameworks would in any case have been too costly to be in any way possessed by a solitary person. The presentation of the microchip, a solitary chip with all the hardware that some time ago involved huge cupboards, prompted the expansion of PCs after around 1975. Early PCs by and large called microcomputers, sold frequently in pack structure and in constrained volumes and were of intrigue for the most part to specialists and professionals. By the late 1970s, mass-showcase pre-amassed PCs permitted a more extensive scope of individuals to utilize PCs, concentrating more on programming applications and less on advancement of the processor equipment. All through the 1970s and 1980s, home PCs were created for family unit use, offering some close to home efficiency, programming and games, while fairly bigger and progressively costly frameworks (albeit still minimal effort contrasted and minicomputers and centralized computers) were focused on office and independent venture use.

. Advantages of using computers

There are several advantages and benefits of using computers, some of them are discussed below.

* Speed:

Speed is the most important characteristics of a computer. The computer can perform billions of calculations in a fractions of a second.

* Storage:

Computer have large storage capacity. A computer can store very large amount of data.

* Versatility:

Versatility is the key benefit of using computers. A user can perform variety of tasks with a computer like drawing pictures,writing stories, watching movies,playing games.

* Accuracy:

Computer is almost 100% accurate and it never makes mistakes. In the above example, there is a chance that the student can make errors with while solving it but a never does so.