74157 DATASHEET PDF

If a multiplexer has n input, it is said that it is about a multiplexer with n ways. To contact the author. The integrated circuit is a comparator 4 bitsi. Click here for the following lesson or in the synopsis envisaged to this end. That is to say to compare the two binary digits A and B. Static page of welcome.

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If a multiplexer has n input, it is said that it is about a multiplexer with n ways. To contact the author. The integrated circuit is a comparator 4 bitsi. Click here for the following lesson or in the synopsis envisaged to this end. That is to say to compare the two binary digits A and B. Static page of welcome. A binary comparator is a logical circuit which carries out the comparison between 2 generally noted binary numbers A and B.

Return to the synopsis. The number of the entries of order is a function of the number of ways of the multiplexer. We will see how to produce using logical doors a comparator of 2 binary digits. According to the state of the entry of selection Athe exit S recopy either the D0 entry, or the D1 entry.

Thus, one can compare numbers of 8, 12, 16 bits…. This table, one can extract the equation from the exit S following: Using one or several entries of order, one switches one of the inputs towards the exit. When this entry is with state 1it is the data Bi which is transferred in Yi. Figure 25 gives the diagram symbolic system and the mechanical equivalent of a multiplexer to 2 ways.

Form of the perso pages. We deduce the equation from it from S following: How to make a site? A multiplexer can thus switch data made up of several bits. By putting in series two comparatorsone can compare two numbers of 8 bits.

The stitching and the logic diagram of this circuit are given on figure That is translated in the table of figure The combinative network of figure 26 can provide the signal S. Electronic forum and Infos. The first circuit compares the weak weights of A with the weak weight of B.

High of page Preceding page Following page. In this chapter, we will examine logical circuits very much used to switch data: Dynamic page of welcome. The integrated circuit is a quadruple multiplexer with 2 ways at entry of common selection. Let us examine simplest of the multiplexers, that with 2 ways. All these considerations are translated in the truth table of figure The number of the inputs of a multiplexer defines the number of ways of a multiplexer.

The stitching of this circuit is given on figure 21, while figure 22 represents its logic diagram. In general, the selected entry carries in index the state corresponding to the combination of the entries of order.

These circuits have several inputs and only one exit. Figure 29 represents the diagram symbolic system and the mechanical equivalent iv a multiplexer with 4 ways. TOP Related Articles.

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