COA Lab
Q1. What happens to the data in ROM when the power supply is turned off?
a) Data is erased
b) Data is retained
c) Data is corrupted
d) Data needs to be rewritten
Q2. Which signal is required to enable data output in a ROM?
a) Write Enable (WE)
b) Chip Enable (CE)
c) Address Enable (AE)
d) Output Enable (OE)
Q3. What is the purpose of the decoder circuit in a ROM?
a) To write data into memory
b) To read data faster
c) To convert address input into a row selection signal
d) To store binary data permanently
Q4. Which type of ROM can be electrically erased and reprogrammed?
a) PROM
b) EPROM
c) EEPROM
d) Mask ROM
Q5. If a ROM has 16 address lines, how many memory locations can it address?
a) 16
b) 1024
c) 65536
d) 8192
