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1) Speed: A computer is a very fast device. It can perform in few seconds, the amount of work that a human being can do in an entire year. The speed of a computer measure in microseconds(10-6), nanoseconds(10-9) and picoseconds(10-12). A powerful computer is capable of performing several billion arithmetic operation per second.
2) Accuracy: Computer is very accurate device. The accuracy of a computer is principle high. The degree of accuracy of a particular computer depends upon it's design. Computer done very calculation with same accuracy. Errors can occur in a computer, However, these problem are mainly due to human rather than technological weaknesses.
3) Automatic(Automation): A machine is no sooner than done to be automatic if it, works by itself without human intervention. Computer are automatic machines, because one started on a job, they carry on, until the job is finished, without any human assistance. However, computer being machines can not start them selves. They cannot go out find their own problems and solutions. They have to be instructed.
4) Diligence: Computer has unlike human beings. A computer is free from dullness and lack of concentration. It can continuously work for hours without creating any error human beings in doing regular types of jobs, which requires great accuracy. Computer can perform the number of calculation with exactly the same accuracy and speed as the first one.
5) Versatility: Versatility is a most important characteristic of computer. It means the capacity to perform completely different type of work. You may use your computer to prepare payroll slips. Next moment you may use it for inventory management or to prepare electric bills. A computer is capable of performing almost any task, if the task can be reduced to series of logical steps.
6) Memory(Power of Remembering): Computer has a brain, but unlike human (Man) beings. A computer can store data and information. And recalled as long as you require it, for any numbers of years. Because of it's secondary storage capability. A data and information can be retrieved as long as desired by the user and can be recalled, as when required. The information recalled would be as accurate as on the day when it was fed to the computer.
7) No. I.Q.(Intelligence Quotient) : A computer is not a magical device. It is no intelligence of it's own. User can determine, what tasks will the computer perform. So a computer cannot take its own decision as you can. (A computer can not take it own decision in this regard.).
8) No Feelings: Computer has no feelings. They have no emotions, because they are machine. Computer is not like human heart and soul. Computer cannot make such judgments on their own. Their judgment is based on the instructions given to them in the from of programs, that are written by us.
PROF. MUHAMMAD FAIZAN SABIR KHAN
Three main characteristics of a computer are:
1. Speed: - As you know computer can work very fast. It takes only few seconds for calculations that we take hours to complete. You will be surprised to know that computer can perform millions (1,000,000) of instructions and even more per second.
2. Accuracy: - The degree of accuracy of computer is very high and every calculation is performed with the same accuracy. The accuracy level is 7
determined on the basis of design of computer. The errors in computer are due to human and inaccurate data.
3. Diligence: - A computer is free from tiredness, lack of concentration, fatigue, etc. It can work for hours without creating any error. If millions of calculations are to be performed, a computer will perform every calculation with the same accuracy. Due to this capability it overpowers human being in routine type of work.
in a desktop it has a cpu, a screen, a mouse and a key board.
in a laptop it has a screen a touch pad and a key board
The major components of a computer are a Central Processing Unit, a motherboard, (CPU), memory, and a hard drive.
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