Question

guys if u help me i wil mark as brainliest

Answer 1

1. its a credit card machine. it is used to pay money. shopping complex and stores.
2.QR code. it may store data such as video or some text or a link. QR code scanner is used to scan/read it. mark me as brainliest

Answer 2

Hi

1)  

a) This is Card Swipe Machine also know as POS (Point Of Sale)/EDC (Electronic Data Capture)

b) It is used for doing payments electronicaly

c) It is used by restaurents, hotels, shops etc..

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2)

a) This is QR (Quick Response) code

b) You can store any data which is text like

Contacts data

Calendar data

URL

Email address

Phone Number

SMS

Text

Geo Location

c) You can read it using your mobile and any QR scanner app

or

You can use QR and Barcode reader machine