ROM properties -more than one match possible for some features but pick only one
ID: 3734089 • Letter: R
Question
ROM properties -more than one match possible for some features but pick
only one.
A. Mask ROM B. Programmable ROM C. EPROM D. EEPROM
E. Flash ROM F. EDO-RAM G. BEDO-RAM H. SDRAM
I. Magnetic core J. Fast Page Ram K. Dynamic Ram L. Static Ram
____ Memory controller specifies single row address followed by up to 4 column
addresses to provide improved read speed. Data read/write completed before next column
addressed.
____ "Programmed" by repeated exposing different parts of the semiconductor material
to different chemicals resulting in 'bits' and connections being permanently created in
the surface of the chip.
____ Destructive read, but can maintain store value even without power.
____ Uses either NOR gate technology which can be read like ram memory (byte
addressable) or NAND gate technology which is read at block level like a hard drive.
____ Uses burnable "fuses" that can be blown to set bit to "zero". Technology also
used in programmable logic arrays.
____ Uses transistor flip-flops requiring constant power to keep stored bit.
____ Erasable using ultraviolet light.
____ Uses very small capacitor storage cells requiring regular refresh of the stored
bit.
____ Programmable and erasable at the byte level using a higher than working level
____ Uses isolated floating gate to set/clear bit.
____ Allows controller to specify a single row address followed by up to 4 column
addresses to provide improved read speed. Memory controller addresses next column while
data read/writes completes.
____ Provides the densest read-only memory storage.
____ Provides the densest read/write memory storage.
Explanation / Answer
Solution:
The first four subparts have been answered as per Chegg guidelines, please repost others.
EDO-RAM
Memory controller specifies single row address followed by up to 4 column
addresses to provide improved read speed. Data read/write completed before next column
addressed.
Programmable ROM
"Programmed" by repeated exposing different parts of the semiconductor material
to different chemicals resulting in 'bits' and connections being permanently created in
the surface of the chip.
EPROM
Destructive read, but can maintain store value even without power.
Flash ROM
Uses either NOR gate technology which can be read like ram memory (byte
addressable) or NAND gate technology which is read at block level like a hard drive.
BEDO-DRAM
Uses burnable "fuses" that can be blown to set bit to "zero". Technology also
used in programmable logic arrays.
EPROM
Erasable using ultraviolet light.
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