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Computer science (virtual memory (when run out of ram (put in VM(on hard…
Computer science
virtual memory
when run out of ram
put in VM(on hard drive)
using HD as RAM
easily accesible HD
Von neumann architecture
CPU
PC
mem address
next thing
ALU
calculations
decisions
Control Unit
How
Cache
Fast
Access
Data frequently needed
MAR
address
where
data
fetched
stored
MDR
data
fetched
mem
from
to
PC
tells MDR
MDR gets data from mem
mem location in MAR
PUT IN CACHE
When data here PC incremnted
embedded system
on system
one task
mp3
traaffic lights
factory equipment
ram vs rom
rom
bootstrap
firmwave instead of software
read only
ram
from hd to ram
holds os when computer running
volatile
power off
lose data
w/r
CPU
performance
clock-speed
no of instructions
set-time
move data
around CPU
cache
keep regularly used data
prevents going to RAM
part of CPU
CORES
like
ALU
CU
NO of
CPUs
many compoments
have own processor