May 18, 2015

Write about OCR?

  Write about OCR?
Answer: Full form of OCR is “optical character reader”. By reflection of light text, symbols and any marks and some hand writing are read red by which device is called OCR. It was like OMR. It light reflected. It is otherwise 1 0. It is mainly used for reader product hidden code.

Feb 26, 2014

Write down about keyboard?

Write down about keyboard?

 Answer: Keyboard:- It is a common input device. It is used for writing text and some function. It has five parts. They are –
(1)    Function key pad.
(2)    Text key pad.
(3)    Control key pad.
(4)    Movement key pad.
(5)    Numeric key pad.