Computer, Types , Functions

• Computer:
A computer is an electronic device that processs data, converting it into information that is useful to people. Any computer is controlle by programmed instructions, which give the machine a purpose and guide it what to do.
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• The first step of solving a problem a a computsfs is to develop a computer program and them store it in the memory. The computer them executes the instructions in the program. The instructions generally direct the computer to perform three basic functions over and over again; these are processing, output. Collectively, these functions constitute the data processing cycle.
• Input: Input devices feed the computer facts or data to be processed.
• Processing: The control and storing of data, numerical comparisons and arithmetic operations are performed on the input data to produce the results.
• Output: The computer feeds the processed data or information to the output devices.
A computer reads a program and stores it in the memory and executes instructions to:
• Input data from disk, keyboard, and other storage media.
• Process data and
• Output results to display screen, disk or other media.