It reads data for the CPU of the computer AKA The Brain
what is device manager and steps to see the detail of device manager
read, write
read to the file
input device
device manager
Device Manager
HKLM\Hardware
Transport Layer
Device Manager
A CD-ROM drive.
Read Only refers to a memory device which contains previously recorded data, which cannot be modified by the user.
There are many sorts of input devices and devices to read and write from internal storage, you need to be more specific with your question and tell us what data it is that you are tying to read.