Please could someone explain how each of these things work in about three sentences?

Hi please may you explain how these 6 things work please:

•optical mark reader (describe how it works and where it is used)

•optical character reader (describe how it works and where it is used)

•Magnetic stripe reader (describe how it works and where it is used)

•Smart card reader (describe how it works and where it is used)

•RFID reader (describe how it works and where it is used)

•Touch-sensitive screen (describe how it works and where it is used)

•Graphics tablet (describe how it works and where it is used)