![]() If either or both of the inputs is high, the output is driven low. In this alternative way to achieve NOR logic, only one transistor is used with the two inputs tied to its base through resistors. It is generally used to provide approximate. Order of magnitude is used to make the size of numbers and measurements of things more intuitive and understandable. The term is generally used in conjunction with power-of-10 scientific notation. When the base-emitter diode is turned on enough to be driven into saturation, the collector voltage with respect to the emitter may be near zero and can be used to construct gates for the TTL logic family. An order of magnitude is an exponential change of plus or minus 1 in the value of a quantity or unit. The use of transistors for the construction of logic gates depends upon their utility as fast switches. For the NOR logic, the transistors are in parallel with the output above them so that if either or both of the inputs are high, the output is driven low. When the base-emitter diode is turned on enough to be driven into saturation, the collector voltage with respect to the emitter may be near zero and can be used to construct gates for the TTL logic family. The output is high unless both A and B inputs are high, in which case the output is taken down close to ground potential. For the NAND logic, the transistors are in series, but the output is above them. For the OR logic, the transistors are in parallel and the output is driven high if either of the transistors is conducting. ![]() A bipolar junction transistor (BJT) is a type of transistor that uses both electrons and electron holes as charge carriers. ![]() The use of transistors for the construction of logic gates depends upon their utility as fast switches. 3D model of a TO-92 package, commonly used for small bipolar transistors. HyperPhysics***** Electricity and magnetism For the AND logic, the transistors are in series and both transistors must be in the conducting state to drive the output high. When the base-emitter diode is turned on enough to be driven into saturation, the collector voltage with respect to the emitter may be near zero and can be used to construct gates for the TTL logic family. Request PDF A More Than Six Orders of Magnitude UV-Responsive Organic Field-Effect Transistor Utilizing a Benzothiophene Semiconductor and Disperse Red 1 for Enhanced Charge Separation A more. ![]()
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