Introduction to Sequential Circuits: Understanding Flip-Flop: The Basic R-S FLIP-FLOP Consider the above schematic circuit of MC724 quad 2-input NOR gate of R-S Flip-Flop. When power is switched on and no inputs are applied(R=0 and S=0), due to imbalance of the circuit let say Q3 goes into conduction and Q1 and Q2 are in cut-off. [...]
The exclusive-OR gate has a high output only when an odd number of inputs is high. As shown in above circuit of Exclusive-OR gate, the upper AND gate gives output A’B and lower AND gate gives AB’ and both these output are given as input to OR gate whose output is given by Y=A’B+AB’ As [...]
Encoder is a digital circuit that converts an active signal into a coded output signal. General idea of encoder is illustrated in following block diagram There are n input lines, only one of which is active. Encoder converts this active input to the binary coded output with m bits. Decimal-to-BCD Encoder: The above circuit shows [...]
A decoder is similar to demultiplexer, with one exception and there is no data input. The only input are the control input ABCD. In this logic circuit only 1 of the 16 output lines is high and therefor it is called 1-OF-16 Decoder. 1-OF-16 Decoder Let control input ABCD=0001, so only Y1 AND has [...]
In computing or digital,nibble means combination of 4-bit e.g. 0010 or 0001 etc. Nibble Multiplexer As shown in above circuit, there are two input nibble one on the left is A3A2A1Ao and on the right is B3B2B1Bo. The control signal SELECT determines which input nibble(A3A2A1A or B3B2B1Bo) is transmitted [...]
A multiplexer is a circuit which has many inputs but only one output. Multiplexer or MUX means many into one. By applying proper control signal we can steer any input to the output. Therefor it is also known as data selector and control inputs are called select inputs. Watch this ppt on Multiplexer MUXBlockDia gives [...]
Introduction: Data is information that has been translated into a convenient form to process Data-Processing circuits are logic circuits that process binary data. Such logic circuits may be Multiplexer(also known as MUX), De=Multplexer, Encoder, Decoder or Exclusive-OR Gate. Time: 5 hours Level : Third Year B.Sc. Objectives: Decide the output of a multiplexer or [...]
