A computer system is a collection of hardware and software components designed to provide an effective tool for computation. Computer system are used in every walk of life to assist us in the various tasks we perform. The wide availability of the internet has enhance the use of computer for information sharing and communication. Computer system allows us to store, process, display and communicate information. In any modern computer system even a simple one, in general needs several different programs in order to accomplish its various functions.

Tuesday, November 28, 2017

Optical scanning system

A scanning system can be an input or output system or a combination of both.  A system’s imaging fidelity depends on and begins with the reading of the input information and ends with the writing of the output data.

Optical scanning can be defined as a system articulation of light to provide information transfer.

An optical scanner is a digital computer input hardware that captures a bit-mapped image of a document.

When the image scanned is a photograph, it may be stored for use as is or be subjected to image processing.

It can read text and graphics from printed material.  A scanner works by digitizing an image – by digitizing it into a grid boxes and representing each box with either a zero or a one, depending on whether the box is filled in.

Optical scanning serves as an information converter. It transforms a spatial function such as images into a time domain to adapt it to electronic processing.
Optical scanning system

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