Answer Happy

What are the answers for A,B,C ?
Question 1 (6 Marks): er the following questions. 19 22 representation (use 8-bits): a) Perform the following operation using two's complement signed binary number Then Check your answer by converting the signed binary result to signed decimal. -25 - 43. 0111100 b) Convert to the required base: (935.812510=(3170_ ) 16 = (1647-64 . (3 points) (3 points) Question 2 (9 Marks): 4 aUsing Boolean algebra, simplify the following expression as much as possible: (2 points) AB(CD+EF)(AB+CD) b) Using Boolean algebra, simplify the following expression as much as possible: 8 = (1/1 101)2 2 6 (2 points) (5 points) 3 ABCD+ AB(CD)+(AB)CD c) For the combinational logic circuit given in Figure (1-a), i) Find the Boolean expression of the output (X) in its simplest form. ii) Realize the simplified expression obtained in (i) using (AND-OR-NOT) gates. iii) Realize output X using NAND gates only. iv) Realize output X using NOR gates only. For the circuit input waveforms given in Figure (1-b), draw the output aveforms