1. The binary equivalent of 20 is –––––––––
(a) 00011010                              (b) 00100000
(c) 10100000                              (d) 00010100

2. The code where all successive numbers differ from
their preceding number by single bit is –––––––––
(a) Alphanumeric code                             (b) BCD
(c) Excess 3                                                (d) Gray

3. 1's complement can be easily obtained by using
–––––––––
(a) Comparator                                      (b) Adder
(c) Inverter                                             (d) Subtractor

4. Which is the major functioning responsibility of a
multiplexer?
(a) Decoding the binary information
(b) Generation of all minterms
(c) Generation of selected path between multiple
sources and a single destination
(d) Encoding of binary information

5. In which flip flop the present input will be the
next output?
(a) D                                     (b) T
(c) JK                                    (d) RS

6. The set-reset flip flops can be constructed by the
cross-coupling of ––––––––– gates.
(a) AND or NAND                   (b) XNOR or NOR
(c) NAND or NOR                   (d) XOR or OR

7. In serial shifting method, data shifting occurs
–––––––––
(a) One bit at a time                  (b) Simultaneously
(c) Two bit at a time                  (d) Four bit at a time

8. What is a shift register that will accept a parallel
input, or a bi-directional serial load and internal
shift features, called?
(a) tristate                           (b) end around
(c) universal                        (d) conversion