1. Speed = Since a computer is an electronic device, it operates as the speed of electric flow which is measured in billionths and trillionths of a second. It is faster than any other machine designed to do similar work. At such speeds, a computer can solve in less than a minute problems that would take at least ten hours on a punched card data processing system.
2. Accuracy= High speed processing by computers is accompanied by high-accuracy results. The electronic circuitry of computers is such that, when the machines are programmed correctly and when relatively assured. No other system can operate with as much accuracy as the electronic system.
A computer can be considered as 100% accurate. Checking circuits are built directly into the computer, so that computer errors that are undetected are extremely rare. Because of the speed and accuracy, computer systems are capable of processing large amounts of data more cheaply than if manual methods are used.
3. Automatic Operation
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