Information technology can improve patient safety by preventing errors and facilitating rapid response to adverse events. Computerized prescribing by physicians. The NOR gate is a digital logic gate that implements logical NOR - it behaves according to the truth table to the right. A HIGH output (1) results if both the inputs.
Free Ebooks Nissan Largo Repair Manual solution manual of fundamentals physics by hallidayresnickwalker 8th edition download volksvagen owners. The Natural House A Complete Guide To Healthy Energy Efficient Enviromental Homes.pdf Other Suggested File to Download
GATE ECE books - Electronics Communication Engg reference books.
NOR gate - Wikipedia. This article is about NOR in the sense of an electronic logic gate (e. For NOR in the purely logical sense, see Logical NOR. For other uses of NOR or Nor, see Nor (disambiguation).
INPUTOUTPUTABA NOR B0. The NOR gate is a digital logic gate that implements logical NOR - it behaves according to the truth table to the right. A HIGH output (1) results if both the inputs to the gate are LOW (0); if one or both input is HIGH (1), a LOW output (0) results. NOR is the result of the negation of the OR operator.
It can also be seen as an AND gate with all the inputs inverted. NOR is a functionally complete operation—NOR gates can be combined to generate any other logical function. By contrast, the OR operator is monotonic as it can only change LOW to HIGH but not vice versa. In most, but not all, circuit implementations, the negation comes for free—including CMOS and TTL.
In such logic families, OR is the more complicated operation; it may use a NOR followed by a NOT. A significant exception is some forms of the domino logic family. The original Apollo Guidance Computer used 4,1. ICs, each one containing only a single 3- input NOR gate. Symbols. For more information see Logic Gate Symbols.
The ANSI symbol for the NOR gate is a standard OR gate with an inversion bubble connected. Hardware description and pinout. The standard, 4. 00. CMOS IC is the 4. NOR gates. The pinout diagram is as follows. Pinout Diagram of a 4. Quad NOR DIP- format IC.
Vdd. Availability. These are usually available in both through- hole DIP and SOIC format. Datasheets are readily available in most datasheet databases. In the popular CMOS and TTL logic families, NOR gates with up to 8 inputs are available: CMOS4. Quad 2- input NOR gate.
Triple 3- input NOR gate. Dual 4- input NOR gate.
Single 8- input NOR gate. TTL7. 40. 2: Quad 2- input NOR gate. Triple 3- input NOR gate. Dual 4- input NOR gate (with strobe, obsolete)7.
Dual 5- Input NOR Gate. Single 8- input NOR Gate. In the older RTL and ECL families, NOR gates were efficient and most commonly used. Implementations. If either of the inputs is high, the corresponding N- channel MOSFET is turned on and the output is pulled low; otherwise the output is pulled high through the pull- up resistor.
The diagram below shows a 2- input NOR gate using CMOS technology. The diodes and resistors on the inputs are to protect the CMOS components from damage due to electrostatic discharge (ESD) and play no part in the logical function of the circuit. Morris and Charles R. Logic and Computer Design Fundamentals, Third Edition.
Prentice Hall, 2.