a) What will be the contents of the accumulator after the following instruction sequence is executed?  LXI H, C490H  XCHG  MVI A, 40H  ADD E  HLT  (b) If the system clock is 2MHz, find the time needed...

a) What will be the contents of the accumulator after the following instruction sequence is

executed?

 LXI H, C490H

 XCHG

 MVI A, 40H

 ADD E

 HLT

 (b) If the system clock is 2MHz, find the time needed to execute the given instructions:

 MVI A, 5AH

 MVI B, A7H

 ADD B

 INR A

 XRA A

 HLT/RST 1

 (c) If the carry flag is reset, specify the contents of the accumulator & CY flag after it executes the

RAL instruction. Assume the content of the accumulator is C4H