 Welcome to Logic Symbols. In this video you'll review the schematic symbols of logic gates for digital circuits. Each type of logic gate is assigned a symbol that has a distinct shape so that it can be distinguished from other types of gates. Each symbol has at least two input leads and one output lead. The leads are used to make connections with devices that provide input signals and with a device that is driven by its output. Several gates can be connected together in various configurations to perform more complex operations. The symbol for each type of logic gate follows and, or, nand, nor, exclusive or, or exclusive nor. Another basic logic device is the inverter. Because it consists of only one input, it is technically not considered a logic gate. Thus, it is also referred to as a not gate. Now that you're familiar with the symbol for each type of logic gate, see if you can match them correctly. Please feel free to pause the video if you need more time to think about your selections. Congratulations! You have completed the video Logic Symbols. Thanks for watching. If you liked this video, please give us a thumbs up.