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Picture printed on cardboard or wood and cut into various pieces of different shapes that have to be fitted together.

Pyrometer is a type of remote-sensing thermometer used to measure the temperature of a surface.

Also known as a radio aerial, this is a a rod, wire, or other structure by which signals are transmitted or received as part of a radio transmission or receiving system.

Electronic device that receives radio waves and converts the information carried by them to a usable form. It is used with an antenna.

Here can be a short description of this collection.

Here can be a short description of this collection.

An apparatus for receiving radio programmes.

RAID is a storage technology that combines multiple disk drive components into a logical unit for the purposes of data redundancy and performance improvement. Data is distributed across the drives in one of several ways, referred to as RAID levels, depending on the specific level of redundancy and performance required. A RIAD controller, which is a type of disk array controller, is a device which manages the physical disk drives and presents them to the computer as logical units.