Understanding types of memory Flashcards
DRAM
Constantly refreshed, goes by address row and column
SRAM
Sram - used for cache memory, holds info in memory celss, helps find info faster, doesnt need to be refreshed. refreshed at the systems speed
CMOS RAM
stores configuration memory,
VRAM
video , pixels, audio helps speeds up
The purpose of memory
supports work area of the computer
increases the speed
less work, more space
2 types RAM
Rom - Rom helps boots
Ramm is erased when the computer cuts off
Data is measured in what?
Data measured in nano/secs..
CMOS needs power ___
because it maintains info from the battery
VRAM can be read and ___
written
ROM =
Read only memory
EPROM =
(erasable programable rom)- Can be used to make update bios
EEROM
(flash rom) - runs software for the manufacture
Erasable programmable ROM (EEPROM) called flash ROM runs software from the manufacturer. It is used to update what?
Bios
what is parity?
Verifies info, read at a later time
What does a parity error indicate about the memory?
There is an issue with the intergity of the data
Non-parity memory is not used to perform
error checking against the information that is “read” compared to what is “retrieved”.
In random access memory, the lower the number of nanoseconds the better the what?
Perfomace
Software that is written to a read-only memory chip is called _______.
firmware
How many DIMMs are required to fill a bank?
one
