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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.
In 1944, the Luftwaffe introduced a plugboard switch, called the Uhr (clock), a small box containing a switch with 40 positions. It replaced the standard plugs. After connecting the plugs, as determined in the daily key sheet, the operator turned the switch into one of the 40 positions, each producing a different combination of plug wiring.
Plug board may refer to: . Plugboard, a component of certain encryption machines, unit record equipment and some early computers; Telephone switchboard, another name for a manual exchange
A series of three rotors from an Enigma machine, used by Germany during World War II Exploded view of an Enigma machine rotor:1-Notched ring, 2-Dot marking the position of the "A" contact, 3-Alphabet "tyre" or ring, 4-Electrical plate contacts, 5-Wire connections, 6-Spring-loaded pin contacts, 7-Spring-loaded ring adjustment pin, 8-Hub, through which fits the central axle, 9-Finger wheel, 10 ...
The various Enigma models provided different levels of security. The presence of a plugboard (Steckerbrett) substantially increased the security of the encipherment. Each pair of letters that were connected together by a plugboard lead were referred to as stecker partners, and the letters that remained unconnected were said to be self-steckered ...
Switch to smaller plates and bowls to naturally reduce portion sizes. Invest in blackout blinds and breathable bedding to make it easier to get enough sleep . If one of you decides to enjoy a ...
A plate of these chocolate and peanut butter cookies are guaranteed to get gobbled up at your Super Bowl party. They're a hit with both kids and adults alike. Get the Peanut Butter Blossoms recipe .
All but the earliest machines had high-speed mechanical feeders to process cards at rates from around 100 to 2,000 per minute, sensing punched holes with mechanical, electrical, or, later, optical sensors. The operation of many machines was directed by the use of a removable plugboard, control panel, or connection box.
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