![]() There are 2 ways in which switches are connected with each other.ġ. The electrical circuits containing switches by Boolean expressions, if ON is denoted by true or 1 and OFF is denoted by False or 0. If the switch is open, current will not pass through it. ![]() If the switch is closed, current will pass through it.The switch has two states NO or OFF (closed or open) A switch is a device is an electric circuit which lets or does not let the current to flow through the circuit. The simplest switching device is NO-OFF switch. Applications of Boolean Algebra in Switching Theory: We can interconnect these devices to form an electronic circuit that realizes any given Boolean Expression. NOT Gate: A NOT Gate receives input x and produces output y denoted x' as shown in the logic table x OR Gate: An OR gate receives inputs x and y and produces output denoted x V y as shown in the logic table x If x and y are variables, then the basic expressions x ∧ y (AND), x ∨ y (OR) and x' (NOT) are shown graphically as follows:ĪND Gate: An AND gate receives inputs x and y and produces output denoted x ∧ y, as shown in logic table x These logic circuits can be constructed using solid-state devices called gates, which are capable of switching voltage levels. The Boolean expressions can be graphically represented by using logic circuits. Next → ← prev Logic Gates and Circuits: Schematic or Graphical Representation of Boolean Expressions:
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