**Logic Diagram Full Adder**- binational circuits binational circuit is a circuit in which we bine the different gates in the circuit for ex le encoder decoder multiplexer and demultiplexer some of a digital logic circuit is defined as the one in which voltages are assumed to be having a finite number of distinct value types of digital logic circuits are binational logic circuits and sequential logic circuits how does a calculator add two numbers together so far we ve had a very simple look at what s going on inside a calculator but we ve not actually got to the heart of how it takes two numbers and adds them to make a third one a truth table is a mathematical table used in logic specifically in connection with boolean algebra boolean functions and propositional calculus which sets out the functional values of logical expressions on each of their functional arguments that is for each bination of values taken by their.

logical variables enderton 2001