Feb 2017

applications with internet


Applications of Computers in Education

Computer education is becoming mandatory in most of the universities across the world. They basically teach the subjects which enable the students to acquire a job in software engineering Industry. Teachers use computers as teaching aids with a provision for spare time to enable students to interact with teacher at the end of session. Nowadays, colleges are setting up such a system where student and faculty attendance, syllabus, schedule of tests, exams etc., are put on the web and students, their parents and faculties can access it from anywhere and get updated.


Applications of Computers in Industries

Mostly, the software or the hardware that are produced by companies would be used to automate the manual task. An industry, capable of producing such products is called software industry. Other companies which use these services are called clients. Computers can be used to produce pattern in textile industries, colors combinations in paint industries, automate the operation of a machine in an industry using robotics, etc.


Applications of computers in Business

They are used in commercial organizations to accomplish clerical and administrative work. Tax calculations, salary slop preparations etc., can be done using computers. Stock market predictions can be done. Banks are using computers to maintain the accounts and record transactions. E-banking is picking up popularity because of the flexibility of banking from an armchair. Excluding the matter of much talked security, they are used comfortably by the customers. E-Shopping is one more concept gaining popularity in industry where a customer can buy the displayed items by paying through credit card or cash on delivery options.


Applications of Computers in Entertainment

Animations and Special Effects for the movies are done using high end workstations. In Titanic movie, they used 100 high end Linux workstations in parallel to produce the special effects. Also, the movies and music are available in the form of CDs, VCDs, and DVDs which cost less compared to watching movies at theatres. People prefer to watch them through these media in their leisure time. Kids enjoy playing games using computers.


Basic Functional Units of a Computer/Basic Anatomy of Computers

The computer system consists of three units:

Input device

Central Processing Unit(CPU)

Output device


Configuring icloud on your iOS Devices


Block diagram of a computer


The various functions of these units can be summarized as:

Input Device

This is the process of entering data and programs into the computer system. We all know that computer is an electronic machine like any other machine which takes inputs as raw data and performs processing, giving out processed data.


Central Processing Unit (CPU)

It is the part of the computer that carries out the instructions of a computer program. It is the unit that reads and executes program instructions. Hence, it is known as the brain of the computer. The CPU consists of storage or memory unit, Arithmetic Logic Unit (ALU) and control unit.


(a) Memory Unit

It is also known as the primary storage or main memory. It stores data, program instructions, internal results and final output temporarily before it is sent to an appropriate output device. It consists of thousands of cells called storage locations.


(b) Arithmetic and Logical Unit (ALU)

It performs mathematical calculations and makes logical comparisons.

The actual processing of the data and instruction are performed by Arithmetic Logical Unit. The major operations performed by the ALU are addition, subtraction, multiplication, division, logic and comparison. Data is transferred to ALU from storage unit when required. After processing, the output is returned to storage unit for further processing or getting stored.


(c) Control Unit

It acts as a central nervous system and ensures that the information is stored correctly and the program instructions are followed in proper sequence as well as the data are selected from the memory as necessary. It also coordinates all the input and output devices of a system.


Output Device

This is the process of producing results from the data for getting useful information. Similarly, the output produced by the computer after processing must also be kept somewhere inside the computer before being given to you in human readable form. Again the output is also stored inside the computer for further processing.



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