What's the answer for the question:
A, B and C are 8 bit no's. They are as follows:
A -> 1 1 0 0 0 1 0 1
B -> 0 0 1 1 0 0 1 1
C -> 0 0 1 1 1 0 1 0 ( - =minus, u=union)
Find ((A - C) u B) =?

A->11000101

B->00110011

C->00111010

FIND (A-B)UC

ans:

 -(minus)  mean take AND operation

 U(union) mean take OR operation

A-B->00000001

(A-B)U C->(A-B) OR operation with C

->00111010

I think minus means the complement of C and add with A and add one with the answer will be got and union means obviously OR..................

Here A is negative number
Hence by removing sign bit A->1000101
Its 2's complement is 0111011

Hence A-C=0
Hence solution is B

A-C is the substraction of two binary numbers
ie A is added to the complement of C
which gives

10001011.

the unoin operation if considered as the 'or' operation ie  /
we have 10001011 / 00110011 then we have the answer as
10111011.
please let me know  to deduce the correct ans if the above is wrong.

The binary subraction of A and C is 10001011
and when we take the union it is obivously OR operation so the ans should be
10111011

2's complement of C = 11000101+1=11000110 = D

When comparing 5400 series logic to 7400 series logic.