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Summary All of the GCSE Computer Science OCR

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Notes on all of the GCSE OCR Computer Science specification J277 from 2020

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Uploaded on
May 27, 2024
Number of pages
27
Written in
2023/2024
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Summary

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TOPTC
1-1




ardoore
CPU




ponents
of
neuLnan




or




Funckion
archite




unchon
TpanStnae
Liše
ctre
brns
Tne
CPU
arctecture dsebes
ALU(Anithmalic lgicad Conputer
a
cyde
decocLaxecwte
logyt
chitecture
ha




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n



Or
leat Sinle placcd
conponant stores
lostt cumpates
ro
prom
n
Ha




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are




te
cpu othar wmputet (ie winwn
wne
eaite)
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or
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6PU
Some
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ple




n
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Cache
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Ihe
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cloes
na
canept
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deign
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fundamentad
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w

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stenws
cUhnetd
to




to
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e
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egsteo
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actte
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h
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s
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te
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eg
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st
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ha
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fer
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s




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data
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the cpied
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se
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n the




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B-ray opri dislcs epeat
proces
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, CPU Pexormonce
Processor speed (usuay in GHe -Ggehertz)-clocksped9

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eeyseund
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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

, tmbedded
Sysienc
A computer Systm thaty bult into eneter derico
softwane end tertene e ntegruted Dn a Circuit board


Some Ryonyis
ishn wasner


dgitad clocs
vehicles
.MP3 Player




Disdvcntges
Adontag
Embeddd sstesae r Smallr
than enil purpose computeo ich purpose compters (buk tnay
Imen chece cen ro be)
be made more cnt dont nee


•Embed dedsystems ore cheaped to
prodc then gened purpose sysr emms,uhch (bt ney e ndy needa bo do g
bask)

.Embedded Sy Stems tend to be moe




Dedicaked computer systems
•A dicdicated computer systemn is one that has fiked pupu


Cwything else.




General pupoe systems

Other capters noy
be wded in iffeet soys dipendiny on the tasks that nead to de
be


base wond be

dasctp Ht, Smartph one,laptop ar
A
Frm nternet plg gowmey cnd send
he wsed to nabe spreoduet, doroad music fie

they cam
nemad



A compuker System
dicun
tha with penphal
ncbsle
systems wil
•Computer
(herdr) bhat oue necas5 Gry tomaa tie wytr fundn
recere Uputs, proces th cleta t recibe then
oclu ca cun otput
TE

PROCESS OUTPU1
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