19 th thuât nâng cấp my tnh !"#$%& ' ()*+ ,-. ( - !" #$%&'()*'+!,())+-++./01 2##034(##40(" 3. 5+'1#67#%8#)*'+! 9,:' ;<=%>'+?@A+B0:2&C #.;&%8#))+-++9,:' ;<=%>-.?@A+B?D'+,(2&E F"'D'+8G2&%H!I'0JK #.5#%,LM7D'+N8GE"# 034?K%&8O#)*'+! 'O 72&H. P(%Q , R%806) *'+!,())+-++S,((4)+!%,(T# *!+<U')9*SB<VP)W;<;#+XY%4C -'+'+ %,(- %' !E;+<)+!. P0,Q #'(Z#%8[O> '6H'(0. Y501#$8GI %&#;#+ =++\,] F@O&@.5# %"^8G'&_ 0". *M&]#C;#+=++08 -'+`I F@'(#;-+T+\8a03 48G'%#('),+!Ob.)&%c$ I;#+=++'@#'(##. /@! !E'T#*!+d!++<;#+ =++%&ZJK%8@H;+ ,(@! '0Ke $;#+=++.5C!+ 5 ;#+=++'',+fWg./'h@# '0 KFI'. Xg ' 8@4%0138 &' &'i.P&' &'(]034 #@Q %$6, '((#3E['( , IQ !RJ%M4'! F ](. jQ#!E'($IOC#%&c&S @! !E,(T#*!+%d!++<k,+% A=+!%)8'+++!. ljF,:]034im#I Q $#E,: %7-'+&?FZ F'08E, % 2&H 6%I 8 '(-'+: 64# +8%-'+:\(' *H010'0,( 0&bI0 8 :E.PCe#('Q4FOC(# (]%Q#'^!$8 :6#. 5#2&-'+&0&'0-'+ 0!m!'0,(#.g'0,0iiG%7 -'+_h8G2n-'+:3. j'(0](#%8@! ,(T#*!+% d!++<k,+.Td+-+%8@;+.o k,+%p'+#%8@*+%*q+% ,:V'q+9T/B'(YT/,(T2q+9T/B'(YrrT/.PC #!m!'s(#%4&P!-'+ #C. P]#$h8GI #JF8^# :FF0:#J.PC, #JQ# 7I 4^#!?'?EH0 F(#$@!Q . tT 7#QC#$#Q '( C'Q !i](ER.p:(E% F !E $(#, '079C&B.)e &('048_e? (#&$0.p4,Q #%8^8a ]'0 K('(4.*F@'(C'Q ! (E 01R#@. /@! ,(T#*!+%d!++<k,+. Tu+d-'+%8@;+%,(2&8a@E(E e:%[' (E#@#'(, . vgIQ !,(%b8 ' 034%hs '0,(8 :.T$n, E,]7 4^2E##$. 5#%1R('Q4(].) &%+#%8cHS,(;<=%> !.%C!;+,+k!!'<;+,+% *WTwA,+;#+,(*WTw;#+k!!'%>A+%,( 0;!5#!+,])8'+. xT(I !O]%+I G6(E2@% &h00,(034s#\ % H!4 p%5y%8E, #F3.5#% &i]034e#h'(EF 6# $.p4,Q #8&EIs\ 6H. z^#,(;<=%>-%;!%@ ,(7034F##\ %? 8@Wg.T#$h\ ,(c3@]. {g\ #%+I G%&G,|+ 6_h0$%I e'H_ OC'c01R.)&%F@H!# #,(C '08 :%'(c@E G,OC&. z^#,(;<=%>+,+.%RJ:%Z %@A+%)8'+@EG,Z k%P+*+%d'd'#%=++ d++*''9=d*B%5+'+!#. PC6L'(+&%8&,(;< =%>-%;+,+%)8'+k''fk!!'#%& '7G,,Z%,(@Wg. 5C'Q !(#@F7#$i#C.PC'(# d+VVI d+VVV%C'Q !(#&IF#$' rr}.5#%C#$Zd+Vp\'4O !E[7C'Q !&. T '0~'(&]034 , _I ' G,(#%CQ 0H%8^#m"7 ' &. •*&]034I G,6&E I0$#,( E1(&. z 0(#2E#,('H#!E2R'~77' &$ 0:':01Q#+#.j# JG3% 8^#c$I(#8n,(;<=%> ,(5;+'+%2&@E&C&. rg(!O]%80100:L€+' CCH.PC'(0,Q #%8^(@E7 OC&E!N&.P& • _&K 740,(#$. 5+'1#6#%( 034%8 '(*%&'s74F(. g(I %+I G%&G,| +_00,(#%#&]G,^i' 1,(I ]%8&'8aH #,(C (#. /,(;<=%>'<k=+,+d< kf=+,+*!+%,([O'7 034V+2;+,+%'++8;+,+% T++T5'%P+;+,+% T+d'#+9C8eV++A2!'+4(#' 0#D+D2,4&F,((3B. Y501%8ek=+,+d‚ 7034OCa#%0,: ]!O]%'(0,Q #% FQ !6H,L n'dD'+,(E\73.)&% 2&8@4 Q !(%8_,(;<;+%> 6!O]&%,(2&@E74M&'6H 8ECiE.zI 8_&,(T#*!+<U' )9*SB<dD'+,(2&74M&' 6H. XgE 034,]#I ]034 FR70_F2&,48C Q&'H_OeCH.j&'(7O84 0104~8. 5i4\I c#%&_s imi' 034(#C&'(7034#].j] &'(E I'(, 6#$. /O!E&"8C7034(0 e#8Q#18n,(;<=%>!+-+%'s 7034(8F,(2&. lp $)+!Q @0&!O( H!8'(, bH3%0&hCF 2R'~ 7' 6#Q '.5Q %& • M'((4 2F@!,('(EJ%@'(7##C. PC#$i#C%,(F8E, (4?1H! ##3%8e+!3E@S 8@ !E,(T#*!+d!++<k,+% d+-+%8@;+.o ƒ p'A +%8ky- 8+!+-+.T(468h@3E%8e'%# 68h#3. tT ]OH~(I !O]'( e]!O]ebIe #'~,4h '(I #%F(#.P]%034(#2 'L'(+#I Q $0E ](.) &%8:'8a034e ,#% [7'&O,s @. vT\ D'+%(I 034%mI G[ %s '( 8E!bs@E %Q $E 6H.z 0(#c ch'(JK@]'0.5#8 Z0bI(#0012#mI" !,(2&h. p(;<=%>++%RJ: %F( 8 ,(' )+'++.9jQ#_'(38_&4' 7D'+4^\0:&\QCB. x5i4 %hs '0 6RJ0\, IQ ! ''O0„(3.5#%+1( #(, '07h(#(I,('(Q 6#./c$I(#,4&&'] 6#. /@! !E,(T#*!+d!++<k,+% ;!=+,+#%;+%++8 -'(9+B. {T\ -'+%(I 034%mI G [ %s '( 8E!bs@E %Q $E 6H.z 0(#c ch'(JK@]'0.5#8 Z0bI(#0012#mI" !,(2&hSp(;<=%>!!'% RJ: %F(8 ,(' )+'++. •g#8G+%Z, ,^c#%^#1t!H& #2R'~i]7' GC!Q 7 ,.PC8G+Q %^#R@,(H=++# 0 F,];/#9C'(U!!8^# Q !…&†#'B%&=++' 'O7%(4 :h88C&8034# e'H%8@! ,((E64'('& '(, C!.