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The plugboard allows rewiring the connections between keyboard (2) and fixed entry wheel (4). Next, the current proceeds through the—unused, so closed—plug (3) via the entry wheel (4) through the wirings of the three (Wehrmacht Enigma) or four (Kriegsmarine M4 or Abwehr variant) rotors (5) and enters the reflector (6).
Plugboard, a component of certain encryption machines, unit record equipment and some early computers Telephone switchboard , another name for a manual exchange Power strip a device that plugs into a power socket to increase the number of power sockets available for other devices
Reverse side of the same 402 plugboard, showing the pins that make contact with the machine's internal wiring. The holes were called hubs. A plugboard or control panel (the term used depends on the application area) is an array of jacks or sockets (often called hubs) into which patch cords can be inserted to complete an electrical circuit.
Any Enigma - fully configurable Rotors, Plugboard and Reflector. Sample models: German Railway (Rocket), Swiss K: No: Yes Web Encryptor - The Online Encrypter [6]
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An IBM 80-column punched card of the type most widely used in the 20th century IBM 1442 card reader/punch for 80 column cards. A computer punched card reader or just computer card reader is a computer input device used to read computer programs in either source or executable form and data from punched cards.
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