Top 350+ Solved Digital Logic Circuits (DLC) MCQ Questions Answer

From 316 to 330 of 340

Q. Complement of F’ gives back  

a. f’

b. f

c. ff

d. ff’

Q. Decimal digit in BCD can be represented by                          

a. 1 input line

b. 2 input lines

c. 3 input lines

d. 4 input lines

  • d. 4 input lines

Q. The number of logic gates and the way of their interconnections can be classified as

a. logical network

b. system network

c. circuit network

d. gate network

  • a. logical network

Q. EPROM uses an array of                                

a. p-channel enhancement type mosfet

b. n-channel enhancement type mosfet

c. p-channel depletion type mosfet

d. n-channel depletion type mosfet

  • b. n-channel enhancement type mosfet

Q. The EPROM was invented by                              

a. wen tsing chow

b. dov frohman

c. luis o brian

d. j p longwell

  • b. dov frohman

Q. Address decoding for dynamic memory chip control may also be used for

a. chip selection and address location

b. read and write control

c. controlling refresh circuits

d. memory mapping

  • a. chip selection and address location

Q. Which of the following describes the action of storing a bit of data in a mask ROM?

a. a 0 is stored by connecting the gate of a mos cell to the address line

b. a 0 is stored in a bipolar cell by shorting the base connection to the address line

c. a 1 is stored by connecting the gate of a mos cell to the address line

d. a 1 is stored in a bipolar cell by opening the base connection to the address line

  • c. a 1 is stored by connecting the gate of a mos cell to the address line

Q. The check sum method of testing a ROM                              

a. allows data errors to be pinpointed to a specific memory location

b. provides a means for locating and correcting data errors in specific memory locations

c. indicates if the data in more than one memory location is incorrect

d. simply indicates that the contents of the rom are incorrect

  • d. simply indicates that the contents of the rom are incorrect

Q. The major disadvantage of RAM is?

a. its access speed is too slow

b. its matrix size is too big

c. it is volatile

d. high power consumption

  • c. it is volatile

Q. Which one of the following is used for the fabrication of MOS EPROM?

a. tms 2513

b. tms 2515

c. tms 2516

d. tms 2518

  • c. tms 2516

Q. How many addresses a MOS EPROM have?

a. 1024

b. 512

c. 2516

d. 256

  • c. 2516

Q. ROMs retain data when                              

a. power is on

b. power is off

c. system is down

d. all of the mentioned

  • d. all of the mentioned

Q. When a RAM module passes the checker board test it is                              

a. able to read and write only 0s

b. faulty

c. probably good

d. able to read and write only 1s

  • c. probably good
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