What is a 7485 comparator?
74LS85 or SN54/7485 is a 4-bit magnitude comparator of two binary format inputs. In electronics devices besides addition and subtraction comparison of binary numbers is also important to perform the operations.
What is 2 bit comparator?
A comparator used to compare two binary numbers each of two bits is called a 2-bit magnitude comparator. It consists of four inputs and three outputs to generate less than, equal to and greater than between two binary numbers.
What is a 8 bit 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.
How do you make a 4-bit comparator?
Algorithm of 4-bit comparator: Now let us consider two numbers, A and B, with four digits each. Then, write the coefficients of the numbers in descending order. It comprises of eight inputs each for two 4- bit numbers to generate three outputs that are less than, equal to and greater than in between two binary numbers.
Which IC is required to implement a 4-bit comparator?
74LS85
For Implement 4-Bit Magnitude Comparator using IC-74LS85:
| IC Number | IC Name |
|---|---|
| 74LS85 | 4-Bit Magnitude comparators |
What is 8bit comparator?
What is TTL 74ls85?
Correct Answer : 4-bit magnitude comparator.
How many equal conditions are there in 4-bit comparator?
How many 4 input LUTs will a 4-bit comparator require?
But for 4-input comparator, the logic utilization is three 4-input LUTs and MUX.
How we can cascade 4-bit comparator to make 8-bit 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.
How many OR gates are required for 4-bit magnitude comparator?
Optimized Logic diagram of 4-bit magnitude comparator: There are 4 XOR gates used with the same inputs. There are 5 gates of AND or NOR used with the different number of inputs but in both of them the principal of layout is same.
How do you make an 8-bit comparator?
For 8-bit we use two 4-bit numbers, 4 EX-NOR and 4 input AND gate, OR gate. An 8-bit comparator compares the two 8-bit numbers by cascading of two 4-bit comparators. For the lower order comparator, the A=B cascade input must be connected high, while the other two cascading inputs A, B must be connected to low.