Q.1
The flag bits in an ALU is defined as
  • the total number of registers
  • the status bit conditions
  • the total number of control lines
  • all of the mentioned
Q.2
The carry propagation can be expressed as
  • cp = ab
  • cp = a + b
  • all but y0 are low
  • all but y0 are high
Q.3
Which combinational circuit is renowned for selecting a single input from multiple inputs & directing the binary information to output line?
  • data selector
  • demultiplexer
  • both data selector and data distributor
  • data distributor
Q.4
A procedure that specifies finite set of steps is called
  • algorithm
  • venn diagram
  • chart
  • flow chart
Q.5
HDL MODELS OF COMBINATIONAL CIRCUITS
  • true
  • false
Q.6
Why do we need to define clock signal in the sensitivity list of the process?
  • to trigger the statement as soon as there is some event on clock
  • to trigger the clock signal as soon as there is some event on input
  • to trigger the clock signal as soon as there is some event on output
  • to trigger the statement as soon as there is some event on input
Q.7
Which of the following sequential circuit doesn’t need a clock signal?
  • flip flop
  • asynchronous counter
  • shift register
  • latch
Q.8
When numbers, letters or words are represented by a special group of symbols, this process is called
  • decoding
  • encoding
  • digitizing
  • inverting
Q.9
A three digit decimal number requires                  for representation in the conventional BCD format.
  • 3 bits
  • 6 bits
  • 12 bits
  • 24 bits
Q.10
Carry out BCD subtraction for (– (using 10’s complement method.
  • 00000111
  • 01110000
  • 100000111
  • 011111000
0 h : 0 m : 1 s