Digital Logic and Design MCQs with Answers
Practice important Digital Logic and Design MCQs with answers and explanations.
Multiple Choice Questions
Q861: What happens in the RAS only refresh cycle in DRAM?
- A: CAS goes low before RAS
- B: RAS goes low and latches the row address
- C: CAS remains active throughout
- D: An internal counter provides the row address
View Answer
B
Q862: In which ROM type is the storage cell implemented using a MOS transistor?
- A: Mask ROM
- B: PROM
- C: EPROM
- D: EEPROM
View Answer
A
Q863: What is the main feature of Flash memory that makes it ideal for storing data?
- A: Volatile memory
- B: High read/write speed
- C: Non-volatile and high density
- D: Permanent data storage
View Answer
C
Q864: What type of PROM allows erasing of stored data with UV light?
- A: Mask ROM
- B: PROM
- C: UV EPROM
- D: EEPROM
View Answer
C
Q865: How many address lines are required for a 2 KB EPROM?
- A: 8
- B: 10
- C: 16
- D: 32
View Answer
B
Q866: What is the primary function of a FLASH memory array?
- A: Store multiple data bits
- B: Select and read specific data cells
- C: Connect transistors in series
- D: Manage data transfer rates
View Answer
B
Q867: In a FLASH memory array, what activates a row of transistors?
- A: Column select line
- B: Control gate of MOS transistors
- C: Source terminal connection
- D: Row select line
View Answer
D
Q868: What happens when a column select line is activated but the transistor gate has a stored charge?
- A: Current flows through the transistor
- B: No current flows through the transistor
- C: Voltage drop across the active load is produced
- D: The comparator output is a 0
View Answer
B
Q869: In FLASH memory, what determines if current flows through a column line?
- A: The charge stored in the transistor gate
- B: The row select line activation
- C: The column select line activation
- D: The voltage drop across the active load
View Answer
A
Q870: Which type of memory is non-volatile and uses a latch to store a bit?
- A: Static RAM (SRAM)
- B: Dynamic RAM (DRAM)
- C: ROM
- D: EEPROM
View Answer
A