# 7 Controlling things; selling things

As you learned in Section 1, computers can collect, process, store and distribute information. This section shows that they can also be used to:

- control machines and simple mechanisms
- conduct a special kind of commerce: selling on the web.

This section will look more closely at these concepts, using a common example as a case study.

OpenLearn - An introduction to data and information in health and social care
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