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This set of Digital Logic Circuits DLC Multiple Choice Questions & Answers (MCQs) focuses on Digital Logic Circuits Set 9
Q1 | Complement of F’ gives back
- f’
- f
- ff
- ff’
Q2 | Decimal digit in BCD can be represented by
- 1 input line
- 2 input lines
- 3 input lines
- 4 input lines
Q3 | The number of logic gates and the way of their interconnections can be classified as
- logical network
- system network
- circuit network
- gate network
Q4 | EPROM uses an array of
- p-channel enhancement type mosfet
- n-channel enhancement type mosfet
- p-channel depletion type mosfet
- n-channel depletion type mosfet
Q5 | The EPROM was invented by
- wen tsing chow
- dov frohman
- luis o brian
- j p longwell
Q6 | Address decoding for dynamic memory chip control may also be used for
- chip selection and address location
- read and write control
- controlling refresh circuits
- memory mapping
Q7 | Which of the following describes the action of storing a bit of data in a mask ROM?
- a 0 is stored by connecting the gate of a mos cell to the address line
- a 0 is stored in a bipolar cell by shorting the base connection to the address line
- a 1 is stored by connecting the gate of a mos cell to the address line
- a 1 is stored in a bipolar cell by opening the base connection to the address line
Q8 | The check sum method of testing a ROM
- allows data errors to be pinpointed to a specific memory location
- provides a means for locating and correcting data errors in specific memory locations
- indicates if the data in more than one memory location is incorrect
- simply indicates that the contents of the rom are incorrect
Q9 | The initial values in all the cells of an EPROM is
- 0
- 1
- both 0 and 1
- alternate 0s and 1s
Q10 | To store 0 in such a cell, the floating point must be
- reprogrammed
- restarted
- charged
- power off
Q11 | The major disadvantage of RAM is?
- its access speed is too slow
- its matrix size is too big
- it is volatile
- high power consumption
Q12 | Which one of the following is used for the fabrication of MOS EPROM?
- tms 2513
- tms 2515
- tms 2516
- tms 2518
Q13 | How many addresses a MOS EPROM have?
- 1024
- 512
- 2516
- 256
Q14 | ROMs retain data when
- power is on
- power is off
- system is down
- all of the mentioned
Q15 | When a RAM module passes the checker board test it is
- able to read and write only 0s
- faulty
- probably good
- able to read and write only 1s
Q16 | What is the difference between static RAM and dynamic RAM?
- static ram must be refreshed, dynamic ram does not
- there is no difference
- dynamic ram must be refreshed, static ram does not
- sram is slower than dram
Q17 | How many natural states will there be in a 4-bit ripple counter?
- 4
- 8
- 16
- 32
Q18 | A ripple counter’s speed is limited by the propagation delay of
- each flip-flop
- all flip-flops and gates
- the flip-flops only with gates
- only circuit gates
Q19 | One of the major drawbacks to the use of asynchronous counters is that
- low-frequency applications are limited because of internal propagation delays
- high-frequency applications are limited because of internal propagation delays
- asynchronous counters do not have major drawbacks and are suitable for use in high- and low-frequency counting applications
- asynchronous counters do not have propagation delays, which limits their use in high- frequency applications
Q20 | Internal propagation delay of asynchronous counter is removed by
- ripple counter
- ring counter
- modulus counter
- synchronous counter
Q21 | How many flip-flops are required to construct a decade counter?
- 4
- 8
- 5
- 10
Q22 | The terminal count of a typical modulus-10 binary counter is
- 0000
- 1010
- 1001
- 1111
Q23 | A ripple counter’s speed is limited by the propagation delay of
- each flip-flop
- all flip-flops and gates
- the flip-flops only with gates
- only circuit gates
Q24 | A 4-bit counter has a maximum modulus of
- 3
- 6
- 8
- 16
Q25 | UP-DOWN counter is a combination of
- latches
- flip-flops
- up counter
- up counter & down counter