RAM/ROM and Virtual memory

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RAM:

andom Access Memory

Volatile (data and information is lost when the power is lost)

Latency is the time it takes for the data to be stored and read from RAM

Static RAM:

retains data bits in memory as long as there is power

Dynamic RAM:

consists of a capacitor and a transistor, which requires periodic refresh

ROM:

cannot be altered or reprogrammed

holds the bootstrap

contains booting hardware-like BIOS and hardware checks

ROM is non-volatile-the data is still there even when the power is lost

Types of ROM:

PROM: programmable ROM

EPROM: erasable programmable ROM

EEPROM: electronically erasable programmable ROM

Virtual memory:

takes longer to retrieve data from virtual memory

combining physical storage devices into a virtual storage device

it's slower

can be increased or decreased-accordingly