4 Bit Comparator Circuit. In a 4 bit comparator the condition of a b can be possible in the following four cases. Now let s derive the equations for the three outputs.
For more bit comparison more than one such ics can be cascaded. Design a 4 bit magnitude comparator using combinational circuitscomparator combinational circuits4 bit 4 bit magnitude comparatorfybsc cscomputer science111. 4 gates of xor are the same.
Now let s derive the equations for the three outputs.
Above we are using all four comparators in the lm339 as a 4 bit voltmeter. Also see voltage comparator circuits. Seeing from the above diagram we can use 11 gates to implement the 4 bit comparator beside the inverters. We will compare each bit of the two 4 bit numbers and based on that comparison and the weight of their positions we will draft a truth table.
