एक ऑप्टिकल स्कैनर का उपयोग मुख्य रूप से निम्नलिखित में से किसे डिजिटल रूप में परिवर्तित करने के लिए किया जाता है?

Which of the following is NOT used as an input device?

Which of the following is used as an input device for a computer?

A device that converts instructions and data into computer acceptable form and supplies the converted instructions and data to the computer system for further processing is known as ________.