Back when computers were first created they were the size of rooms. One the the most notable change now is that there a lot smaller now. They also work better with different bits of technology. They can now be used by anyone.
These days computers provide good advantages in business. One of these advantages is that businesses are able to keep track of their files, documents and schedules. It also allows them to organise all their information in a very accessible manner.
Barcodes are used often in todays world. The black lines are read by a laser and the white lines reflect the laser which makes the laser see a line of code. They are used mostly in shops. The reason they’re in shops is so we can make sure the product is show the right price when we scan it.
Image from Barcode1 IE
A QR code is used mainly for bringing you to websites. These codes can be scanned horizontally and vertically. This makes them easier to scan than the barcodes.
Image from TEC-IT Datenverarbeitung GmbH