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As adjectives the difference between enabled and disabled

is that enabled is being capable for use or action while disabled is made incapable of use or action.

A clock (better represented as clk) is a signal which is used to make the flipflop work at its positive or negative edge (in exceptional case both edge). But, an enable is a signal which makes the flipflop function as long as it is high (1). It can be made low (0) to make the flipflop stops its function.

A decoder circuit takes multiple inputs and gives multiple outputs. A decoder circuit takes binary data of 'n' inputs into '2^n' unique output. In addition to input pins, the decoder has a enable pin. This enables the pin when negated, to make the circuit inactive.Jul 5, 2018

Multiplexer circuits typically have an enable input (EN pin in Fig. 1) in addition to the other inputs. The EN pin functions as a global on/off switch. As an example of how a multiplexer's EN pin operates, a truth table is shown below in Fig.

By Priority Encoder we refer to Encoders where a certain priority is given to each input and based on the level of priority the output code is generated. It also has an Enable pin which is an active low pin and when set low, it enables the encoder operation. It works within the operating voltage range of 2 V to 6V.

• A standard decoder typically has an additional input called Enable. Output is only generated when the Enable input has value 1; otherwise, all outputs are 0. Only a small change in the implementation is required: the Enable input is fed into the AND gates which produce the outputs. Many components have an Enable input which works in this way.

• Decoder is a combinational circuit that has ‘n’ input lines and maximum of 2 n output lines. One of these outputs will be active High based on the combination of inputs present, when the decoder is enabled. That means decoder detects a particular code.

• The selection lines of the demultiplexer are the input lines that the decoder gets and the one input line of demulitplexer is the Enable input of the Decoder. Making 1:4 demultiplexer using 2:4 Decoder with Enable input. Let A, B be the selection lines and EN be the input line for the demultiplexer.

• The block diagram of 3 to 8 decoder using 2 to 4 decoders is shown in the following figure. The parallel inputs A 1 & A 0 are applied to each 2 to 4 decoder. The complement of input A 2 is connected to Enable, E of lower 2 to 4 decoder in order to get the outputs, Y 3 to Y 0. These are the lower four min terms.

The “enable” input in decoders Generally, decoders have the “enable” input.The enable input perroms no logical operation, but is only responsible for making the decoder ACTIVE or INACTIVE. If the enable “E” is zero, then all outputs are zero regardless of the input values.

Mean to say, If E equals to 0 then the decoder would be considered as disabled regardless of what inputs are, If E equals to 1 then the decoder would work as per inputs.

To construct a decoder, we require to know the number of all possible output lines that totally depends on the given input. So, if n represents given input lines then possible output lines would be 2 n . Decoder with two inputs would give 4 outputs (n=2,2 2 that is 4). Step 1.