2. [25 points] ASCII code. a) Decode the following bit sequence (expressed in hexadecimal): 0X49034353 b) Encode the following word to bit sequence (expressed in hexadecimal): UDCIS 3. [20 points] With x = 1101 0101two and y = 0100 1010two representing two's complement signed integers, perform the following operations, showing all the work: a. x+y b. X-y State decimal value of x and y, the expected answer, the actual answer, and whether an overflow occurs