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The full operation of a simple sorting network is shown below. It is evident why this sorting network will correctly sort the inputs; note that the first four comparators will "sink" the largest value to the bottom and "float" the smallest value to the top. The final comparator sorts out the middle two wires.
In most cases a comparator is implemented using a dedicated comparator IC, but op-amps may be used as an alternative. Comparator diagrams and op-amp diagrams use the same symbols. A simple comparator circuit made using an op-amp without feedback simply heavily amplifies the voltage difference between Vin and VREF and outputs the result as Vout.
Free First public release date Year of latest stable version Windows Macintosh Linux Other platforms Max supported file size Beyond Compare: Scooter Software [1] No; Proprietary: No 1996 2025-01-15 (v5.0.5) Yes Yes Yes > 2GB (64 bits) Compare++: Coode Software [2] No; Proprietary No 2010 2016-7-17 (3.0.1.0b) Yes [3] No No diff, diff3: AT&T
Comparators are closely related to operational amplifiers, but a comparator is designed to operate with positive feedback and with its output saturated at one power rail or the other. If necessary, an op-amp can be pressed into service as a poorly performing comparator, but its slew rate will be impaired.
Since CAS operates on a single pointer-sized memory location, while most lock-free and wait-free algorithms need to modify multiple locations, several extensions have been implemented. Double compare-and-swap (DCAS) Compares two unrelated memory locations with two expected values, and if they're equal, sets both locations to new values.
A digital comparator or magnitude comparator is a hardware electronic device that takes two numbers as input in binary form and determines whether one number is greater than, less than or equal to the other number. Comparators are used in central processing units (CPUs) and microcontrollers (MCUs). Examples of digital comparator include the ...
various data comparators including cmp and diff; A digital comparator; An optical comparator; Mathematical symbols used for comparison, for example can the equals sign be used to compare if two values are equivalent, or inequality signs can be used to compare if two values are different; The Comparator Hypothesis in the psychology of motivation
An optical comparator (often called just a comparator in context) or profile projector is a device that applies the principles of optics to the inspection of manufactured parts. In a comparator, the magnified silhouette of a part is projected upon the screen, and the dimensions and geometry of the part are measured against prescribed limits .