36. A bus is a group of _____ carrying digital signals.

A. wires

B. gates

C. transistors

D. registers

E. None of the above

37. The simplified form of the Boolean expression (X + Y + XY)(X + Z) is

A. X + Y + Z

B. XY + YZ

C. X + YZ

D. XZ + Y

E. None of the above

38. De Morgan’s first theorem says that a NOR gate is equivalent to a bubbled _____ gate.

A. AND

B. XAND

C. XOR

D. NOR

E. None of the above

39. Addition of 102 and 112 is

A. 100_{2}

B. 101_{2}

C. 111_{2}

D. 110_{2}

E. None of the above

40. How many bits are required to encode all twenty-six letters ten symbols, and ten numerals?

A. 5

B. 6

C. 2

D. 3

E. None of the above