Fufyhqï moAo;s(Operating System)
ye|skAùu
fuh moAo;s uDÿldx. wldrhlA fõ' mß>klhlg úÿ,s n,h ,nd ÿkA ú.iu" mßYS,lhdg mß>klh yd lsisu ld¾hhl kshe,shfkdyel' mßYS,lhdg lsishï ld,hlA n,d isáh hq;=h' tu ld,h ;=, mß>klh ;=, isÿjk ls%hdj,sh nQákA ls%hdj,sh (Booting Process)f,i ye|skAfõ'tu ls%hdj,sfhA m%:sM,hlA f,i fufyhqï moAo;sh f,dAâ fõ' Tn mß.klh yd ikAksfõokh lrkqfhA tu fufyhqï moAo;sfhA fldgiA yrydh' tkï fufyhqï moAo;sh yd iïnkao Start button,task bar,icons,menus jeks fldgiah'
fufyhqï moao;s hlAhkq l=ulAo?
tkï fufyhqï moAo;shlA hkq mß>klh yd mßYS,lhd(User) iïnkAo lrk w;r ueos tAllh fõ' ;j;A ir,j lshf;d;A fhÿï uDÿldx.(Application Software) Odjkh(Execute) i|yd wjYH mßirh ilidoSu fufyhqï moAo;s húiskA isÿlrkq ,nhs'

		USER							COMPUTER	
			    	   Operating System

fufyhqï moao;s i|yd Wodyrk
fï i|yd Wodyrk ;ks mß>kl(Stand alone computers) i|yd my; mßos fõ'
(Windows 98, Windows 2000, Windows XP, Windows Vista, Windows 7)
mß>kl cd, i|y"
(Windows NT, Windows XP 2003 server, Linux)

fufyhqï moao;s w;=re uqyqk;A (Interface)
mßYS,lhd mß>klh yd ikAksfõokh lrk ;srh w;=re uqyqk;A f,i ye|skAfõ' fuu w;=re uqyqk;A mßYS,lhdg myiqfjkA yeisr úh yels mßos ks¾udkh l, hq;=h'wldr foll w;=re uqyqk;A oelsh yelsh'tkï"
•	wlAIr w;=re uqyqk;A (Command Line Interface)
•	Ñ;%l w;=re uqyqk;A  (Graphical User Interface)
wlAIr w;=re uqyqk;A (Command Line Interface)
fujeks w;=re uqyqk;A yryd mßYS,lhdg ieu úgu h;=re mqjrej yryd úOdk ,nd oSug isÿfõ'
Example: DOS
Ñ;%l w;=re uqyqk;A  (Graphical User Interface)
fuhÑ;% lmokï lr.;A w;=re uqyqk;A j¾.hls' j¾;udkfhA jvd;A ckm%sh fufyhï moAo;s j, we;Af;A Ñ;%l mokï lr .;A w;=re uqyqk;A fõ' fujeks w;=re uqyqk;A ;=, mßYS,lhdg ikAksfõokh i|yd icons,menus,windows,task bar,buttons jeks oEmj;S'
Example: Windows 98,200,XP,VISTA
fufyhqï moAo;s j¾.
m%Odk jYfhkA fufyhqï moAo;s j¾. 03 lA olAkg ,efí' tkï
•	;ks mßYS,l(Single user) fufyhqï moAo;s
•	nyq ld¾hh (Multi task) fufyhqï moAo;s
•	nyq ld¾hh (Multi task) – nyq mßYS,l (Multi user)
;ks mßYS,l(Single user) fufyhqï moAo;s
fuu fuyhqï moAo;s j, ,lAIkh jkqfhA tlA mßYS,lhl=g tlA jrlg Odjkh l, yelAflA tlA mß>kl jev igyklA mukS'
Example :DOS

nyq ld¾hh (Multi task) fufyhqï moAo;s
fuysoS tlA mßYS,lhl+g tl jr mß>kl jev igykA lsysmhlA Odjkh l, yel'
Example:Windows 98,2000,XP
nyq ld¾hh (Multi task) – nyq mßYS,l (Multi user)
fuh nyqld¾hh fukAu tl jr mßYS,lhskA .kkdjlg Ndú;d l, yel'
Example : Windows vista,Linux
fufyhqï moAo;shl ld¾h Ndrh
m%Odk jYfhkA fufyhqï moAo;shlA my; i|ykA ld¾hhkA isÿ lrhs'
•	u;lh l<ukdlrkh
•	f.dkq l<ukdlrkh
•	wodk$m%;sodk l<ukdlrkh
•	ld¾hhkA l<ukdlrkh
u;lh l<ukdlrkh
u;lh yd iïnkAo lghq;= j, kshe,Su u;lh l<ukdlrkh fõ' Wodyrk f,i o;A; iy f;dr;=re i|yd u;lfhA iA:dk fjkA lsÍu" f.dkq i|yd Odß;djh ,nd oSu jeks oE oelA úh yel'
f.dkq l<ukdlrkh
f.dkq yd iïnkAo lghq;= j, kshe,Su f.dkq l<ukdlrkh fõ'tkï f.dkq iEoSu"f.dkq uelSu" Folders iEoSu jeks oE oelA úh yel'
wodk$m%;sodk l<ukdlrkh
fï hgf;A wodk$m%;sodk Wmlrk md,kh isÿ flf¾'wodk m%;sodk md,kh i|yd jk uDÿldx.(driver software) iqÿiq mßoS msysgq ùu fufyhqï moao;sfhA ld¾hh Ndrhhs'
ld¾hhkA l<ukdlrkh
l, hq;= ld¾hhkA mß.klhg ,ndÿkA miq tu ld¾hhkA md,kh l, hq;=j we;' tkï l=uk ld¾hh uq,skA l, hq;=o" ld¾hhkA i|yd wjYH iïm;A fjkA lsÍu" l¾hhkA i|yd ld,h fjkA lsÍu jeks oE md,kh l, hq;=j we;'