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MBR-104: Computers & Information Communication Technology Unit – 01 1 Computer education is becoming necessity in today’s world. Whether you belong to any professional category, you need knowledge about computers. The depth of knowledge depends upon your requirement/profession. Definitely, if you are computer professional then you need in-depth knowledge about its technology as well as its functioning. But, if you belong to any other profession where you are interested only in
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  MBR-104: Computers & Information Communication Technology Unit –  01 1 Computer education is becoming necessity in today’s world. Whether you belong to any professional category, you need knowledge about computers. The depth of knowledge depends upon your requirement/profession. Definitely, if you are computer professional then you need in-depth knowledge about its technology as well as its functioning. But, if you belong to any other profession where you are interested only in increasing your efficiency and productivity, then, you only need to know very little about computers. That is, you need to be computer literate, which will enable you to use the machine specifically as per your need. To become a computer literate, you should know, what is a computer is and what it can do? Basically, computer is an idiot servant; it is very good for simple and small number of tasks. But it can do excellent for a good master. This means that unless you have good knowledge, computer cannot do well for you. Computers can only do the jobs which can be done by human beings. Beside above, computers can store as well as retrieve numbers; it can add, subtract, multiply and divide them; it can do these jobs accurately with a very fast  MBR-104: Computers & Information Communication Technology Unit –  01 2 speed, and the greatest property of computer is  –  it can follow a list of instructions. Computer Computer is an electro-mechanical (it has electronic as well as mechanical components), programmable (use as per one’s need) device that accepts data and processes it to meaningful information with a very high speed and accuracy. Computers are the greatest invention of 19 th  Century. Since then its popularity is increasing exponentially. Whether children or senior citizen, working or non-working, business-men or housewife, everyone need computers for their purpose. With its so wide users it is our duty to understand/know about its characteristics as well as its limitations. Characteristics Speed: It works with a very high speed. Accuracy: The results calculated by computer are always accurate.  MBR-104: Computers & Information Communication Technology Unit –  01 3 Reliability: The computer is very reliable as it is always available at your service. Whenever you need it will perform its duty. Storage: It has a capability of storing permanently. Any data stored in computer can be retrieved any time. Automation: Once initiated, it will start working and work till the job finishes. Versatility: The same computer can serve for different purposes. It means that same machine can be used for educational purpose or entertainment or diagnostics or publication, prediction etc. Communication: With the invention of Internet technology now the computers are capable of exchanging messages, data, voice, audio, video etc. Diligence: With the time, it never get tired. It can work for hours, days, month or years without any break. No feelings: It is emotionless. Effect of environment, users feelings or biasness do not divert or hamper its functioning. Consistency: It is a very consistent machine. It will provide same results for same set of data whenever you instruct him for same job.  MBR-104: Computers & Information Communication Technology Unit –  01 4 Precision: The results given by computers are exact and accurate. Every machine has advantages at one part and disadvantages on other part. Computers have certain limitations also. They can be classified as below: Limitations Programmed by human: Being an idiot servant it is the duty of machine that it performs as per the instructions given by its master/user. No intelligence/: It has no intelligence, that is why it cannot take any decision unless No decision making power defined by its user. Emotionless: Computer is purely mechanical as far as its working is concerned. It is not concerned with users’ physical or mental condition. Curtail human capabilities: It is biggest limitation of computer. People are so dependent on computer that now they need it even for small problems.
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