Digital Computer Electronics – Section 5

16. Binary-Coded-decimal (BCD) numbers express each digit as a _____

A. byte
B. nibble
C. bit
D. All of the above
E. None of the above

17. Computers use thousands of flip-flops. To coordinate the overall action, a common signal called the _____ is sent to each flip-flop.

A. latch
B. clock
C. master
D. slave
E. None of the above

18. Conversion of decimal number 93₁₀ to hexadecimal number is

A. 2D₁₆
B. 5D₁₆
C. 62₁₆
D. 31₁₆
E. None of the above

19. Conversion of decimal number 99₁₀ to it’s octal number equivalent is

A. 121₈
B. 143₈
C. 124₈
D. 119₈
E. None of the above

20. The 2’s complement of binary number 0.01011 is:

A. 1.10101
B. 0.10101
C. 1.10100
D. 0.10100
E. None of the above