What is 8bit comparator?
An 8-bit comparator compares the two 8-bit numbers by cascading of two 4-bit comparators. The circuit connection of this comparator is shown below in which the lower order comparator AB outputs are connected to the respective cascade inputs of the higher-order comparator.
What is 8bit comparator magnitude?
The 74HC688 is an 8-bit magnitude comparator. It performs comparisons of two 8-bit binary or BCD words. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of V CC.
What is the relationship between L e and g in 1-bit comparator?
So, the comparator produces three outputs as L, E and G corresponds to less than, equal and greater than comparisons. Comparators that have only one output terminal and produces the output either low or high are identity comparators.
What is bit comparator?
1-Bit Magnitude Comparator – A comparator used to compare two bits is called a single bit comparator. It consists of two inputs each for two single bit numbers and three outputs to generate less than, equal to and greater than between two binary numbers.
What is TTL 74LS85?
5-1. FAST AND LS TTL DATA. 4-BIT MAGNITUDE. COMPARATOR. The SN54/74LS85 is a 4-Bit Magnitude Camparator which compares two 4-bit words (A, B), each word having four Parallel Inputs (A0 – A3, B0 – B3); A3, B3 being the most significant inputs.
What is electronic comparator?
In electronics, a comparator is a device that compares two voltages or currents and outputs a digital signal indicating which is larger. It has two analog input terminals and and one binary digital output .
Which logic is used in single bit digital comparator?
Exclusive-NOR gates
Digital comparators actually use Exclusive-NOR gates within their design for comparing their respective pairs of bits.
Which gate is two bit comparator?
SET based logic gate
The design, simulation and analysis of 2-bit comparator using SET based logic gate is presented. The circuit compares a pair of 2 bit inputs and produces outputs A>B , A=B and A
What are the outputs of 7485 4 bit magnitude comparator?
The 74HC85 are 4-bit magnitude comparators that can be expanded to almost any length. They perform comparison of two 4-bit binary, BCD or other monotonic codes and present the three possible magnitude results at the outputs (QA>B, QA=B and QAB, IA=B and IAB = = LOW and IA=B = HIGH.
What is the truth table followed by the magnitude comparator?
The truth table followed by the magnitude comparator is shown in Figure 2. A and B are the two 8-bit input signals to the comparator which compares the magnitude of these the two signals. The three 1-bit output signals are A < B, A = B and A > B . Figure 2. Truth Table of 8-bit Magnitude Comparator
What is 8-bit magnitude comparator?
8-Bit Magnitude Comparator – Comparators with three output terminals and checks for three conditions i.e greater than or less than or equal to is magnitude comparator. The Comparator is another very useful combinational logic circuit used to compare the value of two binary digits.
What is the VHDL code for a 8-bit comparator?
VHDL code for a 8-bit comparator is presented in this post. 74F521 is an 8-bit identity comparator which provides the low output if two 8-bit inputs are matched. Below are the truth table and symbol of the comparator.
How many 8-bit magnitude comparators are there in Verilog?
Figure 3 shows the Verilog module of the 8-bit magnitude comparator. The module has two 8-bit input port In1 and In2. There are three 1-bit output ports Eq, Gt, and Lt. Figure 3.