Digital Principles and System Design MCQs | Page - 14

 an encoder is a combinational circuit encoding the information of 2^n input lines to n output lines, thus producing the binary equivalent of the input.

 an encoder is a combinational circuit encoding the information of 2n input lines to n output lines, thus producing the binary equivalent of the input. thus, in octal to binary encoder there are 8 (=23) inputs, thus 3 output lines.

 such problems are resolved by using enable input, which behaves as active if it gets 0 as input since it is an active-low pin.

 a multiplexer or mux is a combination circuit that contains more than one input line, one output line and more than one selection line. whereas, an encoder is also considered a type of multiplexer but without a single output line and without any selection lines.

 an encoder is a combinational circuit encoding the information of 2n input lines to n output lines, thus producing the binary equivalent of the input. if two inputs are active on a priority encoder, the input of higher value will be coded in the output.

 a multiplexer (or mux) is a device that selects one of several analog or digital input signals and forwards the selected input into a single line, depending on the active select lines.

 data selector is another name of multiplexer. a multiplexer (or mux) is a device that selects one of several analog or digital input signals and forwards the selected input into a single line, depending on the active select lines.

 it is possible for an enable or strobe input to undergo an expansion of two or more mux ics to the digital multiplexer with the proficiency of large number of inputs.

 the major functioning responsibility of the multiplexing combinational circuit is generation of selected path between multiple sources and a single destination because it makes the circuit too flexible. a multiplexer (or mux) is a device that selects one of several analog or digital input signals and forwards the selected input into a single line, depending on the active select lines.

 enable input is used to active the chip, when enable is high the chip works (active), when enable is low the chip does not work (memory).