It is a common integrated circuit and is mainly used in high-voltage digital logic gate circuits. Note first that the circuit does not use feedback. in a digital mode. Digital comparator is a device that used in combinational logic systems for comparing two binary numbers. Hope that answers your question! Basically it generates the desired signal (either low or high) at the output when compares two digital values provided at its input. For this to be possible in a binary system, A3 has to be equal to 1, and B3 has to be equal to 0. Digital Number Systems And Base Conversions, Boolean Algebra – All the Laws, Rules, Properties and Operations, Binary Arithmetic – All rules and operations, Sequential and Combinational logic circuits – Types of logic circuits, Logic Gates using NAND and NOR universal gates, Half Adder, Full Adder, Half Subtractor & Full Subtractor, Multiplier – Designing of 2-bit and 3-bit binary multiplier circuits, 4-bit parallel adder and 4-bit parallel subtractor – designing & logic diagram, Carry Look-Ahead Adder – Working, Circuit and Truth Table, Multiplexer and Demultiplexer – The ultimate guide, Code Converters – Binary to Excess 3, Binary to Gray and Gray to Binary, Priority Encoders, Encoders and Decoders – Simple explanation & designing, Flip-Flops & Latches – Ultimate guide – Designing and truth tables, Shift Registers – Parallel & Serial – PIPO, PISO, SISO, SIPO, Counters – Synchronous, Asynchronous, up, down & Johnson ring counters, Memories in Digital Electronics – Classification and Characteristics, Programmable Logic Devices – A summary of all types of PLDs, Difference between TTL, CMOS, ECL and BiCMOS Logic Families, Digital Electronics Quiz | MCQs | Interview Questions. The logic circuit for the 1-bit comparator is given as: 2-bit Magnitude Comparator. The Digital Comparator is another very useful combinational logic circuit used to compare the value of two binary digits Digital or Binary Comparators are made up from standard AND , NOR and NOT gates that compare the digital signals present at their input terminals and produce an output depending upon the condition of those inputs. [10], When a comparator performs the function of telling if an input voltage is above or below a given threshold, it is essentially performing a 1-bit quantization. Basically a comparator is used in electronics to compare the two When Start switch is pressed,N7:0 is the water level value which is compared with 5 and 95 using GEQ and LEQ block to turn ON Motor. The circuit diagramof an inverting comparator is shown in the following figure. That is the aim of any designing process – to obtain the simplest hardware implementation. However, many applications only require comparator outputs at certain instances, such as in A/D converters and memory. This is because of the difference in characteristics of an operational amplifier and comparator,[5] using an operational amplifier as a comparator presents several disadvantages as compared to using a dedicated comparator:.[6]. That means it takes two input voltages, then compares them and gives a differential output voltage either high or low-level signal. For example, the LTC6702, MAX9021 and MAX9031 have internal hysteresis desensitizing them from input noise. The circuit amplifies the voltage difference between Vin and VREF, and it outputs the result at Vout. This site uses Akismet to reduce spam. A exclusive-OR gate can be used as a basic comparator. Zero-crossing detector Start from the basic concepts related to the working of general microprocessors and work upto coding the 8085 and 8086. 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