21.The decimal number 127 may be represented by
a. 1111 1111B
b. 1000 0000B
c. EEH
d. 0111 1111
22.. A byte corresponds to
a. 4 bits
b. 8 bits (Right)
c. 16 bits
d. 32 bits
23.A gigabyte represents
a.1 billion bytes
b. 1000 kilobytes
c. 230 bytes
d. 1024 bytes
24. A megabyte represents
a. 1 million bytes
b. 1000 kilobytes
c. 220 bytes
d. 1024 bytes
25.. A Kb corresponds to
a. 1024 bits (Right)
b. 1000 bytes
c.210 bytes
d. 210 bits
26.A parity bit is
a. used to indicate uppercase letters
b. used to detect errors
c. is the first bit in a byte
d. is the last bit in a byte
27. Which of these devices are two state.
a. lamp
b. punched card
c. magnetic tape
d. all the above
28.The output impedance of of a logic pulser is
a. low
b. high
c. may be low or high
d. none of above
28.The number of LED display indicators in logic probe are
a.1
b.2
c.1 or 2
d.4
29.In hexadecimal number system,A is equal to decimal number
a.10 (Right)
b.11
c.17
d.18
30.Hexadecimal number F is equal to octal number
a.15 (Right)
b.16
c.17
d.18