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A 1-of-n binary decoder has n output bits. This type of decoder asserts exactly one of its n output bits, or none of them, for every integer input value. The "address" (bit number) of the activated output is specified by the integer input value. For example, output bit number 0 is selected when the
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There are several types of binary decoders, but in all cases a decoder is an electronic circuit with multiple input and multiple output signals, which converts every unique combination of input states to a specific combination of output states. In addition to integer data inputs, some decoders also
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Depending on its function, a binary decoder will convert binary information from n input signals to as many as 2 unique output signals. Some decoders have less than 2 output lines; in such cases, at least one output pattern may be repeated for different input values.
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circuit that converts binary information from the n coded inputs to a maximum of 2 unique outputs. They are used in a wide variety of applications, including instruction decoding, data multiplexing and data demultiplexing, seven segment displays, and as
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integer value and activates one specific, unique output for every input value in the range . All outputs are held inactive when a non-decimal value is applied to the inputs.
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activates one of eight output bits for each input value from 0 to 7 — the range of integer values that can be expressed in three bits. Similarly, a
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representation. Unlike the 1-of-n (one-hot) decoder, multiple output bits can be asserted for each input value. These decoders can be used in
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have one or more "enable" inputs. When the enable input is negated (disabled), all decoder outputs are forced to their inactive states.
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Code translators differ from 1-of-n decoders in that multiple output bits may be active at the same time. An example of this is a
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is a 1-of-n binary decoder that is used to route a data bit to one of its n outputs while all other outputs remain inactive.
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where each bit is equally weighted, and circuits that require a binary
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A binary to unary decoder converts each binary value to its associated
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activates one of 16 outputs for each 4-bit input in the integer range .
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A binary decoder is usually implemented as either a stand-alone
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has ten output bits. It accepts an input value consisting of a
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248:One variant of seven-segment decoder is the
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198:Examples of this type of decoder include:
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