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This set of Digital Logic Circuits DLC Multiple Choice Questions & Answers (MCQs) focuses on Digital Logic Circuits Set 11
Q1 | Which of the following is programmed electrically by the user?
- rom
- eprom
- prom
- eeprom
Q2 | PROMs are available in
- bipolar and mosfet technologies
- mosfet and fet technologies
- fet and bipolar technologies
- mos and bipolar technologies
Q3 | Which of the following best describes the fusible-link PROM?
- manufacturer-programmable, reprogrammable
- manufacturer-programmable, one-time programmable
- user-programmable, reprogrammable
- user-programmable, one-time programmable
Q4 | How can ultraviolet erasable PROMs be recognized?
- there is a small window on the chip
- they will have a small violet dot next to the #1 pin
- their part number always starts with a “u”, such as in u12
- they are not readily identifiable, since they must always be kept under a small cover
Q5 | Which part of a Flash memory architecture manages all chip functions?
- program verify code
- floating-gate mosfet
- command code
- input/output pins
Q6 | How much locations an 8-bit address code can select in memory?
- 8 locations
- 256 locations
- 65,536 locations
- 131,072 locations
Q7 | What is a fusing process?
- it is a process by which data is passed to the memory
- it is a process by which data is read through the memory
- it is a process by which programs are burnout to the diode/transistors
- it is a process by which data is fetched through the memory
Q8 | Fusing process is
- reversible
- irreversible
- synchronous
- asynchronous
Q9 | The cell type used inside a PROM is
- link cells
- metal cells
- fuse cells
- electric cells
Q10 | How many types of fuse technologies are used in PROMs?
- 2
- 3
- 4
- 5
Q11 | Metal links are made up of
- polycrystalline
- magnesium sulphide
- nichrome
- silicon dioxide
Q12 | Silicon links are made up of
- polycrystalline silicon
- polycrystalline magnesium
- nichrome
- silicon dioxide
Q13 | During programming p-n junction is
- avalanche reverse biased
- avalanche forward biased
- zener reverse biased
- zener reverse biased
Q14 | The full form of FAMOS is
- floating gate avalanche injection mos
- float gate avalanche injection mos
- floating gate avalanche induction mos
- float gate avalanche induction mos
Q15 | PROM is programmed by
- eprom programmer
- eeprom programmer
- prom programmer
- rom programmer
Q16 | The PROM starts out with
- 1s
- 0s
- both 1s and 0s
Q17 | For implementation of PROM, which IC is used?
- ic 74187
- ic 74186
- ic 74185
- ic 74184
Q18 | IC 74186 is of
- 1024 bits
- 32 bits
- 512 bits
- 64 bits
Q19 | How many memory locations are addressed using 18 address bits?
- 165,667
- 245,784
- 262,144
- 212,342
Q20 | How many address bits are needed to operate a 2K * 8-bit memory?
- 10
- 11
- 12
- 13
Q21 | What is the bit storage capacity of a ROM with a 1024 × 8 organization?
- 1024
- 4096
- 2048
- 8192
Q22 | The logical sum of two or more logical product terms is called
- sop
- pos
- or operation
- nand operation
Q23 | The expression Y=AB+BC+AC shows the operation.
- ex-or
- sop
- pos
- nor
Q24 | The expression Y=(A+B)(B+C)(C+A) shows the operation.
- and
- pos
- sop
- nand
Q25 | The canonical sum of product form of the function y(A,B) = A + B is
- ab + bb + a’a
- ab + ab’ + a’b
- ba + ba’ + a’b’
- ab’ + a’b + a’b’