If it's normal printed text, then it's "Optical character recognition" OCR.
If it was printed with special ink, like bank cheques then it's "Magnetic ink character recognition" MICR.
A scanner takes an input which is printed materials (pictures, text) and converts it to an electronic format that can be edited.
scanner
The Keyboard is an Input Device. It is used to enter text and utilise commands. It is a peripheral.
It is a Output device as it projects images and text.
ocr
That would be a keyboard
scanner
MICR readers are one type of device capable of reading text printed with magnetic ink.
yes
No, Mouse is an input device. Because mouse is used to instruct the computer where to point the cursor and anything that is used to instruct computer in any way is an input device. Output Devices show the processed data by a computer for e.g. a monitor shows where the cursor is by processing the input from a mouse.
A typewriter prints text on to paper and doesn't need anything else. A keyboard types text onto a computer ================================================== A keyboard is to a typewriter just as a keyboard is to a computer monitor, except the latter is partially disconnected and the former is affixed to the typewriter.
Scanners are input devices. They are taking data into a computer, like a photo or text or reading a barcode etc.