EECS 1520 Chapter Notes - Chapter 4: Sequential Logic, Logic Gate

• School: York University
• Department: Electrical Engineering and Computer Science
• Course: EECS 1520
• Professor: Parke Godfrey

Document Summary

Gate: a device that performs a basic operation on electrical signals. Circuits: gates combined to perform more complicated tasks. Not, and, or, xor, nand, nor are the 6 types of gates. Logic diagrams are black and white typically and the shape of the gates give their definition. A not gate accepts one input value and produces 1 output value. Sometimes referred to as an inverter, as 0 becomes 1 and 1 becomes. In and, both input values must be 1 for the output to be 1. In xor, if both input values are the same then the output is 0. Transistor: a device that acts, depending on the voltage level of an input signal, either as a wire that conducts electricity or as a resistor that blocks the flow of electricity. It has no moving parts, acts like a switch and made of semiconductor material (mediocre conductor/insulator) The source, base and emitter are the three terminals in a transistor.