What is OMR and OCR ?

Optical Mark Recognition (OMR)
OMR stands for Optical Mark Recognition. OMR devices read hand-drawn marks such as small circles or rectangles.
OMRis used to read answer sheets of objective type examination. students mark their answers by darkening circles marked on a Pre-Printed sheets.Afterward the sheets is scanned by OMR device and is automatically evaluated.

Optical Character Recognition(OCR)
OCR stands for Optical Character Recognition. It consists of a scanner and a software. The scanner reads the document and saves its image in the computer. The software converts the image into editable text.
OCRis used to read utility bills and price tags. The information on the utility bills and price tage is printed in a particular font. The OCR device reads the information and converts it into digital code. The information converted into the digital code is then processed by the computer.