Summary
Summary All Paper 1 Computing Notes GCSE OCR
GCSE OCR Computer Science, J277 Specification from 2020, all of the paper 1 notes
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Ha ta n CPU
RAM
Sy to R Cuce? RAM
fo
CPU
ctre CPU (eal
are
data
busses ed MAR
neuLnan of
ple one
ha
s
n te e ia es
or archite
wne
n
w all
P
-Eecute
Tha
Sustr
b
Ihis
Or Th The Exe
ben
he
st r goo
il
bo has
C1R e any che
men ha
ot ce
h MDR
CPU to
to
he ne
hg
MAR by bo
the the
unchon cle
na m un
cle
of to
the
the
ko
is
it
1iy
y CLR
dot
he
i
to
fer the
he Vse
n
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on
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ponents
s f wto
Liše wit)
memoy
M
cur
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The
o
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to
it
alnn
the l se
to ht A thod
w be
ro
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to el
P
cd
b AM
The
on so
or
te
Funckion A
A
To
A Ae
Non
ardoore
de
Spphy
CPU
RAM
, CPU Pexormonce
Processor speed (usuay in GHe -Ggehertz)-clocksped9
.4GHe meons that the proasur
eeyseund
Hr me Çe veh- decoce eeute cyds per so nd
Vnuiki -(0re proeSSUYS
cone aVaulodolo
The omtar has wndapardat
þrucessos
hee noependen jprosser
Anwt ot Cache awaulae- (adh memm
Stones neaenthy wed unsbou cksn and data, built nto (s CPO
Provi faster access than RAM
(oada unto he CPU m one
nd date l he
Allo
qui cey
Bus speed
AÇfe cks hos qiy tha
cwmputer
has wn mpact n the speed of a omputer
Bus
Detemines
at Ha Sama bia
Cnm Gne wpratmlú ,
pass)
he bttar the
wiclr d ata bus,
brnsfed at n bina
as mune dcta cun lao
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