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Much of the processing computers can be divided into two general types of operation. Arithmetic operations are computations with numbers such as addition, sub­traction, and other mathematical procedures. Early com­puters performed mostly arithmetic operations, which gave the false impression that only engineers and scien­tists could benefit from computers. Of equal importance is the computers ability to compare two values to deter­mine if one is larger than, smaller than, or equal to the other. This is called a logical operation. The comparison may take place between numbers, letters, sounds, or even drawings. The processing of the computer is based on the computer’s ability to perform logical and arithmetic op­erations.

Instructions must be given to the computer to tell it how to process the data it receives and the format needed for output and storage. The ability to follow the program sets computers apart from most tools. However, new tools ranging from typewriters to microwave ovens have em­bedded computers, or built-in computers. An embedded computer can accept data to use several options in it’s program, but the program itself cannot be changed. This makes these devices flexible and convenient but not the embedded computers itself.

Types of data

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