Memory
What
is access time?
p. 200 Figs. 4-25-4-26
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ØAmount of time it takes processor
to read data from memory
to read data from memory
ØMeasured in nanoseconds (ns),
one billionth of a second
one billionth of a second
ØIt takes 1/10 of a second to blink
your eye; a computer can perform
up to 10 million operations in same amount of time
your eye; a computer can perform
up to 10 million operations in same amount of time
Term Speed
Millisecond One-thousandth of a second
Microsecond One-millionth of a second
Nanosecond One-billionth of a second
Picosecond One-trillionth of a second