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 2 bit digital comparator?
2-Bit Magnitude 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.
How does a 4-bit comparator work?
A comparator used to compare two binary numbers each of four bits is called a 4-bit magnitude comparator. It consists of eight inputs each for two four bit numbers and three outputs to generate less than, equal to and greater than between two binary numbers.
What is ic7485?
In this project SN7485 IC is used which is a 4-bit magnitude comparator. The two 4-bit numbers are input to the IC through a DC supply via 8 position DIP switch. The result of the comparison is verified by connecting LEDs at the output pins of the IC.
Where do the cascading inputs of 7485 come from?
The cascading inputs come from the outputs of another 7485. If you wish to create a 16 bit magnitude comparator, the other 7485 connects to the least significant byte (LSB). As for the last line of the truth table, the outputs indicate that the ‘A’ inputs are simultaneously greater and less than the ‘B’ inputs, which is contradictory.
What does the last line of the truth table indicate?
As for the last line of the truth table, the outputs indicate that the ‘A’ inputs are simultaneously greater and less than the ‘B’ inputs, which is contradictory. But notice that the cascading inputs indicate that the ‘A’ LSB is neither greater than nor less than nor equal to the ‘B’ LSB which is also contradictory, ie an illegal state.
What is the 7485 IC used for?
7485 has multiple uses in servers, networking devices, digital systems, and smart electronic devices. IC simply used to compare the binary data which allows the other devices to perform other functions. The IC comes internally in some embedded systems to perform logical operations.
What is 7474ls85 or sn54/7485?
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. To solve this issue, we use TTL based comparators.
