Combinational Logic (11)

Transmission Gate

The analogue switch is a solid-state semiconductor switch that controls the transmission path of analogue signals. The open and closed operations of the switch positions are usually controlled by some digital logic network, with standard analogue switches available in many styles...

Bus Transceiver

A Transceiver can be used to provide bidirectional, input or output control, of either digital or analogue devices to a common shared data bus. Unlike the buffer, transceivers are bidirectional devices which allow data to flow through them in either direction. Thus their name "t...

Binary Subtractor

As their name implies, a Binary Subtractor is a decision making circuit that subtracts two binary numbers from each other, for example, X – Y to find the resulting difference between the two numbers. Unlike the Binary Adder which produces a SUM and a CARRY bit wh...

Digital Comparator

Digital or Binary Comparators are made up from standard AND, NOR and NOT gates that compare the digital signals present at their input terminals and produce an output depending upon the condition of those inputs. For example, along with being able to add and subtract binary numb...

Binary Adder

Another common and very useful combinational logic circuit which can be constructed using just a few basic logic gates allowing it to add together two or more binary numbers is the Binary Adder. A basic Binary Adder circuit can be made from standard AND and Ex-OR gates allowing ...

Display Decoder

A Digital Decoder IC, is a device which converts one digital format into another and one of the most commonly used devices for doing this is called the Binary Coded Decimal (BCD) to 7-Segment Display Decoder. 7-segment LED (Light Emitting Diode) or LCD (Liquid Crystal Display) t...

Binary Decoder

The name "Decoder" means to translate or decode coded information from one format into another, so a binary decoder transforms "n" binary input signals into an equivalent code using 2n outputs. Binary Decoders are another type of digital logic device that has inputs of 2-bit, 3-...

Priority Encoder

Unlike a multiplexer that selects one individual data input line and then sends that data to a single output line or switch, Digital Encoder more commonly called a Binary Encoder takes ALL its data inputs one at a time and then converts them into a single encoded output. So we ca...

The Demultiplexer

The data distributor, known more commonly as a Demultiplexer or "Demux" for short, is the exact opposite of the Multiplexer we saw in the previous tutorial. The demultiplexer takes one single input data line and then switches it to any one of a number of individual output lines ...

The Multiplexer

Multiplexing is the generic term used to describe the operation of sending one or more analogue or digital signals over a common transmission line at different times or speeds and as such, the device we use to do just that is called a Multiplexer. The multiplexer, shortened to "...

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