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...simple, designed for a child and intended to teach users about diet and diabetes. I sit opposite Charlie, my diminutive fellow player. Between us is a touch screen. Our task is to identify which of a dozen various foodstuffs are high or low in carbohydrate. By dragging their images we can sort them into the appropriate groups. Charlie is polite, rising to greet me when I...

...technologies'? This can be very difficult to define and explain, but here is a simple definition. Information technology (IT) is the technologies used in the conveying, manipulation and storage of data by electronic means. Let us give you some examples. In a landline telephone system, messages are conveyed as signals on wires. The message is conveyed electronically. Manipulation of data takes place when you speak ......