Embedded systems

Merriam-Webster definition of embedded: "enclosed closely in or as if in a matrix : set firmly into a mass or material"
majority of embedded systems are designed to do some specific task, rather than be a general-purpose computer for multiple tasks
Can You give me examples of some embedded systems which are
- present in this room ?
- You use in Your every-day life?
- dominate the planet Earth ?
new industrial revolution: Raspberry Pi, Internet-of-Things (IoT) etc.

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