Switching Theory and Logic Design Mid - II, April - 2012

1.The ROM programmed during manufacturing process itself is called
  • MROM
  • PROM
  • EPROM
  • EEPROM
Answer: A
2.A memory in which the contents get erased when power failure occurs is
  • EAROM
  • PROM
  • ROM
  • RAM
Answer: D
3.A single literal term in SOP expression
  • Requires an inverter for PLA implementation
  • Requires an AND gate for PLA implementation
  • Doesn't requires an AND gate for PLA implementation
  • Doesn't requires an inverter for PLA implementation
Answer: B
4.When an inverter is placed between the inputs of an S-R flip flop,the resulting flip flop is a
  • J-K flip flop
  • Master-Slave flip flop
  • T flip flop
  • D flip flop
Answer: D
5.Flip flops can be used to make
  • Latches
  • Bounce - elimination switches
  • Registers
  • All the above.
Answer: C
6.The output of a clocked sequential circuit is independent of the input.The circuit can be represented by
  • Mealy model
  • Moore model
  • Either Mealy or Moore model
  • Neither Mealy or Moore model
Answer: B
7.For designing a finite state machine K-maps can be used for minimizing the
  • Excitation expression of flip flops
  • Number of flip flops
  • Output logic expression
  • Excitation and output logic expressions
Answer: D
8.While constructing a state diagram of sequential circuit from the set of given statements
  • A minimum number of states must only be used
  • Redundant states may be used
  • Redundant states must be avoided
  • None of the above
Answer: B
9.An ASM chart consists of 
  • Only state boxes
  • Only decision boxes
  • Only decision and conditional output boxes
  • All the above
Answer: D
10.Moore type outputs are
  • Independent of the inputs
  • Dependent only on the inputs
  • Dependent on present state and inputs
  • Any one of the above
Answer: B
11.In a positive unite function all the variables are only in _____________ form.
Answer: Uncomplemented
12.______________ functions cannot be realized using a single threshold gate.
Answer: Unthreshold
13.Master -slave configuration is used in J-K flip flop to eliminate______________
Answer: Race around condition
14.A ___________ ring counter requires no decoding circuitry.
Answer: Basic
15.The process of assigning the states of a physical device to the states of a sequential machine is known as_______________.
Answer: State assignment
16.The merger table method of state reduction is also called ____________ method or ____________ method.
Answer: Paull, Implicant chart
17.A table which consists of the states of a minimal state machine is called a ________________
Answer: Implicant chart
18.The data processing path commonly referred as the _________ paths
Answer: Data
19.______ type of outputs are referred to as unconditional outputs.
Answer: Moore
20.A path through an ASM block from entry to exit is referred to as a _____________.
Answer: Link path