Read Only Memory (ROM) : This is called primary memory. Data is written in this memory by the vendor of the computer permanently.
Pen Drive : This is very popular device now a days for carrying data on move.
Blue Ray Disk : This is same as CD/DVD but only different is it can store multi time of data from CD/DVD and faster than CD/DVD.
Scanner : This is an input device which is used to scan the document for the soft copy.
LCD : It is known as Liqued Crystal Display. It is an output device as monitor.
Motherboard : It is a combination of electronic circuits.
Sound Card : This is also a combination of electronic circuits which helps to give out put in the form of sound.
Graphics Card : This is also a combination of electronic circuits which helps to give output the data into the monitor.