FUNDAMENTALS OF COMPUTER

COMPUTER HARDWARE COMPONENTS FUNCTIONS

COMPUTER OUTPUT DEVICES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following ALWAYS require a database in order to access information?
A
Barcode reader
B
Chip Reader
C
RFID Reader
D
Magnetic Stripe Reader
Explanation: 

Detailed explanation-1: -A barcode reader, also called a price scanner or point-of-sale (POS) scanner, is a hand-held or stationary input device used to capture and read information contained in a barcode.

Detailed explanation-2: -Barcode information is read by an optical (laser) scanner that is part of a computer system. A handheld scanner or barcode pen is moved across the code, or the code itself is moved by hand across a scanner built into a checkout counter or other surface.

Detailed explanation-3: -Click on the QR code icon to begin scanning. When the scan is complete, the text will appear in the “QR Code” field. Use the “Send” icon to submit the record. As a result, the request will be sent to the database and a new record containing QR code value will be created in the “Search Requests” table.

There is 1 question to complete.