Shoppers use a supermarket self-checkout machine to purchase items. They scan barcodes, weigh unpackaged produce on the bagging scale, and pay using a contactless card reader. A paper receipt is then printed.
The main touch screen interface is controlled by an embedded system.
Give two other hardware components in the self-checkout machine that are controlled by embedded systems.
33 exam-style questions on Edexcel IGCSE Computer Science Hardware. Each one has a worked solution and a mark scheme showing where the marks go.