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16 Ιαν 2024 · Digital logic gates are made to form RTL (resistor-transistor logic) or DTL (diode-transistor logic) circuits from discrete parts such as resistors, transistors, and diodes. The most “standard” personal digital logic gates along with their respective truth tables are described below.
Lecture 11 - Logic gates and Boolean. The basic logic gates are the inverter (or NOT gate), the AND gate, the OR gate and the exclusive-OR gate (XOR). If you put an inverter in front of the AND gate, you get the NAND gate etc. One of the common tool in specifying a gate function is the truth table. All possible combination of the inputs A, B ...
Schematic: A drawing of interconnected gates! Net: Wires at the same voltage (electrically connected)! Netlist: A list of all the devices and connections in a schematic ! Fan-in: The # of inputs to a gate! Fan-out: The # of loads the gate drives CSE370, Lecture 45! Example: F = (AŁB)™ + CŁD! Example: F = CŁ(A+B)™ Mapping Boolean ...
Logic gates and truth tables Implementing logic functions Canonical forms Sum-of-products Product-of-sums 2 Logic gates and truth tables AND X•Y XY OR X + Y NOT X' X X Y Z X Y Z 0 0 0 ... Many ways to map expressions to gates Example: ...
Logic Gates • digital circuit that either allows a signal to pass through it or not. • Used to build logic functions • There are seven basic logic gates: AND, OR, NOT, NAND (not AND), NOR (not OR), XOR, and XNOR (not XOR) [later] Building Functions: Logic Gates A B Out 0 0 0 0 1 1 1 0 1 1 1 1 A B Out 0 0 0 0 1 0 1 0 0
Describe the action of logic gates. • AND, OR, NAND, NOR, NOT, XOR and XNOR • Using Boolean expressions. • Using truth tables. Understand the use of universal gates. • NAND • NOR containing standard logic gates.
Any logical function can be constructed using AND gates, OR gates, and inver- sion; several of the exercises give you the opportunity to try implementing some common logic functions with gates.
