Q. 9. Define scanner and track ball.

1.	Q. 9. Define scanner and track ball.
Answer» A scanner is an input device that scans documents such as photographs and pages of text. When a document is scanned, it is converted into a digital format. Scanners work in conjunction with computer software programs, which import data from the scanner. Track Ball : A trackball is an input device used to enter motion data into computers or other electronic devices. Trackballs designed for computers generally serve as mouse replacements and are primarily used to move the cursor on the screen.

Answer»

A scanner is an input device that scans documents such as photographs and pages of text. When a document is scanned, it is converted into a digital format. Scanners work in conjunction with computer software programs, which import data from the scanner.

Track Ball : A trackball is an input device used to enter motion data into computers or other electronic devices. Trackballs designed for computers generally serve as mouse replacements and are primarily used to move the cursor on the screen.

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