Digital Electronics Notes for 3rd SEM PDF

What is full substractor ? With truth table , expression & realisation Q):- What is full substractor ? Ans:-   A full substractor is a combinational circuit that performs a substract three bits and produces their differences. This circuit has three inputs and two output. The three inputs are A,B & C  and two outputs are differences & Borrow. Truth table of full substractor. Expression of Full substractor.   Realisation of Full substractor .

What is half substractor ? & Explain.. Q):- What is half substractor ? Ans:-    A half substractor is a combinational circuit that subtracts two bits and produces their differences . Truth table of half substractor. This circuit has two inputs and two outputs. Let us consider A & B are inputs and difference & Borrow are outputs. Expression of half substractor. Realisation of half substractor.

What is decoder ? ( 2:4 , 3:8 Decoder ).. What is decoder ? Ans:- . It is a combination logic circuit used to convert information into different codes. Let us consider 'n' is the input lines and 'N' is the output lines.  2:4 Decoder It is a type of decoder in which there are two input lines and four output lines. Let us consider 'n'is the input line and'N'is the output line. Expression of 2:4 Decoder Realisation of 2:4 Decoder 3:8 Decoder It is a type of decoder in which there are three input lines and eight output lines Let us consider A,B & C are input lines and Y0,Y1,Y2,Y3,Y4,Y5,Y6 & Y7 are output lines. Truth table of 3:8 Decoder. Expression of 3:8 Decoder. Realisation of 3:8 Decoder. To donate money

What is demux (demultiplexer)? ( 2:4 ,3:8 & 4:16 demux )... Q) :- What is demultiplexer ? Ans:- It is a combinational logic circuit which is consist of single input and switches through many many output with the help of select line.. If ' n ' is the no of select line and ' N 'is the no of output line.                1:4 demux :- This demux consist of single data input line band switches through a four data output line with the help of select line. Let us consider ' I ' is input line.  S o & S 1 are select line and  Y 0, Y 1, Y 2, & Y 3 are output line. Truth table of 1:4 demux. Expression of 1:4 demux. Realisation of 1:4 demux.               1:8 demux This demux consist of single data input line and switches through a eight data output line with the help of select line. Let us consider I is the data input line and S 0, S 1 & S 2,  are select line and Y 0, Y 1, Y 2, Y 3, Y 4, Y 5, Y 6 & Y 7 are data outp