Code-hidden in the language behind the computer soft and hard the 11th chapter of the door

1. Logic gates are very similar to ordinary water passing through or through doors, and in logic the logic gate works very simply-allowing the current to pass through or stop the current;

For 2.1938 years, Shannon completed the famous paper entitled "Symbolic analysis of relays and switching circuits" at MIT, which was described in this article. No man like Shannon can clearly and rigorously elaborate: electronic engineers can use all the tools of Boolean algebra to design switching circuits;

3. Relays, like a switch, can perform simple logic tasks in a circuit in series or in parallel. The combination of this relay is called the logic gate;

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The logic gates mentioned here perform the "simple" logical task which means that the logic gate only accomplishes the most basic functions;

Relay is better than the switch is that the relay can be controlled by other relays, but not by manual control;

This means that these simple logic gates can be combined to achieve more complex functions;

A preliminary understanding of the logic gate.

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4. Relays are essential for the work of Telegraph systems. In long-distance situations, the wires connecting the Telegraph station have high resistance. This requires some measures to receive the faint signal and enhance it before launching it;

5. Relays are controlled by electromagnets to achieve this purpose. In fact, relays generate strong signals by amplifying weak signals;

6. We are not interested in the ability of the relays to amplify weak signals. What we are really interested in is that the relay can be used as a current control rather than a manual control switch;

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Re-brush the relays

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7. Connecting the relay is the key to establish the logic gate;

8. The bulb will light only when two relays are triggered, so that the series of two relays is called a "with door";

9. When the above switch or the following switch is closed, the bulb will glow, so the door is called "or gate";

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There is also a reverse device, which is not a logic gate (a logic gate usually has two or more inputs). Each with two relays in the door and or door, and a relay in one of the reverse devices

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Code-hidden in the language behind the computer soft and hard the 11th chapter of the door