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Optical Character Recoginition locating and identifying printer characters embedded in an image, alloqing the test to be stored as an editable document. OCR can be performed by wand readers, pen scanners and OCR software Spell Checker the process of checking the spelling of words in a document against a dictionary of known words and offering advice on how to make corrections Sound Card an expansion board that enables a computer to manipulate and output sounds Output Devices Devices that enable the computer to give the user the results of the processed data