An optical reader is a device found within most computer scanners that captures visual information and translates the image into digital information the computer is capable of understanding and displaying. A computer is a Machine that manipulates data according to a list of instructions. Historical precedent Scanners can be considered the successors of early telephotography input devices consisting of a rotating drum with a single Photodetector at A digital system uses discrete (discontinuous values usually but not always Symbolized Numerically (hence called "digital" to represent information for
An example of optical readers are marksense systems for elections where voters mark their choice by filling a rectangle, circle or oval, or by completing an arrow. An election is a Decision-making process by which a population chooses an individual to hold formal office After the voting a tabulating device reads the votes using "dark mark logic", whereby the computer selects the darkest mark within a given set as the correct choice or vote.
Marksense is also used extensively in such areas as lotteries and multiple choice tests. A lottery is a form of Gambling which involves the drawing of lots for a prize For the 1974 John Wayne Crime drama movie see McQ. Multiple choice is a form of Assessment in which respondents
See also
- Digital paper
- Optical scan voting system
- Optical scan ballots. Digital paper, also known as interactive paper, is patterned paper used in conjunction with a Digital pen to create handwritten digital documents An optical scan voting system is an electronic voting system and uses an optical scanner to read marked paper Ballots and Tally the results There exist various methods through which the Ballots cast at an Election may be counted prior to applying a Voting system to obtain one or more winners
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