Computer-- a Magical Device

CHARACTERSTICS OF COMPUTERS

1.AUTOMATIC:an automatic machine works by itself without human intervention. computers are automatic machines because once started on a job,they carry out a job until it is finished. however computers being machines can not start themselves. we need to instruct a computer using coded instructions that specify exactly how it will do a particular job.

2.SPEED:a computer is a very fast device. it can perform in a few seconds,the amount of work that a human being can do in an entire year. while talking about the speed of the computers, in milliseconds(1/1000) but in terms of microseconds(1/1000000) and even picosconds(1/1000000000000). a powerful computer is capable of performing several billion(1000000000) simple arithematic operations per seconds.

3.ACCURACY:in addition to being very fast, computers are very accurate. accuracy of computer is consistently high and the degree of its accuracy depends upon its design. a computer performs every calculations with the same accuracy.

4.DILIGENCE:unlike human beings,a computer is free from monotony, tirednesss, and lack of concentration. it can continuously work for hours without creating any error and without grumbling.

5.VERSATILITY:versatility is one of the most wonderful things about a computer. one moment it is preparing results of an examination, next moment it is busy preparing electricity bills, and in between, it may be helping an office secretary to trace an important letter in seconds. in brief, a computer is capable of performing almost any task.

6.POWER OF REMEMBERING:as a human being acquires new knowledge, his/her brain subconsciously select what it feels to be important and worth retaining in memory. this is not the case with computers. a computer can store and recall any amount of information because of its secondary storage capacity.

7.NO I.Q.:a computer is not a magical device. it possesses no intelligence of its own. its i.q. is zero,at least untill today. it has to be told what to do and in what sequence. hence, only a user determines what tasks a computer will perform. a computer can not take its own descesion in this regard.

8.NO FEELINGS:computers are devoid of emotions. they have no feelings and no instincts because they are machines. although men hve succeded in handling a memory for computer, but no computer possesses the equivalent of a human heart and soul. they make judgements based on the instructions given to them in the form of programs that are written by us.