explain the function of computer in long type
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A computer is a programmable machine. The two principal characteristics of a computer are: it responds to a specific set ofinstructionsin a well-defined manner and it canexecutea prerecorded list of instructions (aprogram).
Modern computers are electronic anddigital. The actual machinery -- wires,transistors, and circuits -- is calledhardware; the instructions anddataare calledsoftware.
All general-purpose computers require the following hardware components:
memory:enables a computer tostore, at least temporarily, data and programs.
mass storagedevice:allows a computer to permanently retain large amounts of data. Common mass storage devices includedisk drivesandtape drives.
input device:usually akeyboardandmouse, the input device is the conduit through which data and instructions enter a computer.
output device:adisplay screen,printer, or other device that lets you see what the computer has accomplished.
central processing unit(CPU):the heart of the computer, this is the component that actually executes instructions
Modern computers are electronic anddigital. The actual machinery -- wires,transistors, and circuits -- is calledhardware; the instructions anddataare calledsoftware.
All general-purpose computers require the following hardware components:
memory:enables a computer tostore, at least temporarily, data and programs.
mass storagedevice:allows a computer to permanently retain large amounts of data. Common mass storage devices includedisk drivesandtape drives.
input device:usually akeyboardandmouse, the input device is the conduit through which data and instructions enter a computer.
output device:adisplay screen,printer, or other device that lets you see what the computer has accomplished.
central processing unit(CPU):the heart of the computer, this is the component that actually executes instructions
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