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It was added as part of the Walls of Philip IV in 1748, substituting the previous Puerta de Vallecas []. [2] The last gate that was finally demolished in the mid-19th century was built by Ventura Rodríguez in 1769 on a program to improve several of the gates of Madrid, which also were built or improved the gates of Puerta de Alcalá and Puerta de Bilbao [], the latter two by Sabatini.
The Puerta del Puente (Spanish: "Gate of the Bridge") is a Renaissance gate in Córdoba, Andalusia.Built in the 16th century to commemorate a visit to the city by King Philip II, the gateway is located on the site of the previous Roman gates, linking the city with the Roman bridge and the Via Augusta.
The Puerta de Bisagra Nueva ("The New Bisagra Gate") is the best known city gate of Toledo, Spain. The gate is of Moorish origin, but the main part was built in 1559 by Alonso de Covarrubias. [1] It carries the coat of arms of the emperor Charles V. It superseded the Puerta Bisagra Antigua as the main entrance to the city.
The gating signal acts as a control mechanism, determining when the main signal can pass through the gate and when it is blocked. The gating signal can be generated by various means, such as an external trigger, a specific voltage level, or a specific frequency range.
A generalized n × n Fredkin gate passes its first n − 2 inputs unchanged to the corresponding outputs and swaps its last two outputs if and only if the first n − 2 inputs are all 1. Controlled-swap logic: The Fredkin gate, a three-bit controlled-SWAP gate, operates by conditionally swapping two target bits based on the state of a control bit.
OR-AND-invert gates or OAI-gates are logic gates comprising OR gates followed by a NAND gate. ... Symbol for an 2-1 OAI-gate. The OR gate has the inputs A and B.
An input-consuming logic gate L is reversible if it meets the following conditions: (1) L(x) = y is a gate where for any output y, there is a unique input x; (2) The gate L is reversible if there is a gate L´(y) = x which maps y to x, for all y. An example of a reversible logic gate is a NOT, which can be described from its truth table below:
Fan-in is the number of inputs a logic gate can handle. [1] For instance the fan-in for the AND gate shown in the figure is 3. [2] Physical logic gates with a large fan-in tend to be slower than those with a small fan-in. This is because the complexity of the input circuitry increases the input capacitance of the device.