* Computer is highly dependent on the quality of input data fed to it. Though computers are very fast in tasks that are pre-programmed, it lake the ability of human brain to detect and correct errors that it is not specifically programmed to do.
* The task of programming a computer for a computer application is very costly and time consuming. This reduces the utility of computers for applications that are non-repetitive.
* Computer systems are rather rigid. Once a computers system is designed and programmed,making even minor corrections or improvements can be quite costly and time consuming. For this reason a great care is required in design and development of computer systems.
* Computers require use of sophisticated equipment and support facilities. For example, a person solving a problem of maths using just a pen and paper can carry these with him or her anywhere with ease. However if the same problem is to be solved using a computer, the person will not only need access to a suitable computer, it will also be necessary to have the required software and suitable electric power to run the computer.
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