B(> GIAO DVC VA DAO T~O "' ' "' ~ , TRUONG D~I HOC KINH KE THANH PHO HO CHI MINH ' ~ ' ' NGUYEN DINH HUNG 70 CBUC Bi• Ki 7BACB IIBiiM CDA IE • • • , A A 71AII QUAil 781• 780111 CAC IIAIIB IIIBIIP IIAM • Vll7 • Chuyen nganh Ma s6 : Ke' toan tai VI} va phan tfch ho~t d()ng kinh te' : 5.02.11 " LU~N "" "' VAN TH~C SI KINH TE Hu'ONG DAN KHOA HOC: TlEN si: PH~M vAN nu'(1c >' ' "' HO~ CHI, MINH- NAM "" THANH PHO 2003 Moa :l'CI loan - X"lm loan lruftng YJc s6ng h~mg ngay, chung ta thu'ong xu yen tham gia ho~c lien quan de'n ra't nhi~u lo~i h~ th6ng: h~ th6ng giao thong cong c(>ng, h~ th6ng thong tin lien l~c, h~ th6ng kiem smit n(>i b(> Vl c6 ra't nhi~u h~ th6ng khac nen cling t6n t~i ra't nhi~u cac khai ni~m v~ h~ tho'ng: " H~ th6ng Ia nh6m cac b(> ph~n ho~t d(>ng cung voi nhu' m(>t t6ng the" o> "H~ th6ng la m(>t t~p h ph~n va gifi'a chung c6 sv pho'i ht s6 m1,1c tieu dad~ " Vi d1J: h~ th6ng m~ng may tinh n(>i b(> thl cac may tinh du ph~n cua h~ th6ng, giii'a cac b(> ph~n giao tie'p va ph6i hi da neu (J tren, d~u bao g6m ba d~c diem sau: - Nhilng bq phQ.n cttu thimh: O> Oxford Advanced Leamer's English dictionary < > West Churman, The System Approach (Nha xua't ban Dell, New York, 1968) Trang Bao g6m cac d?c tntng co th€ nhin tha'y, nghe tha'y ho?c cam tha'y Qua trznh xu ty: , La qua trinh rna thong qua cac b9 ph?n duqc ph6i hng Cu{>c 601 nQi vUng Phut 602 - Di•n lho~i di d'{>ng Cu{>c 603 ~nvung Phut 604 CuQc 605 Phut 606 Cu(ic 607 Phut 608 - Eli•n lho~i di d{>ng quocte - Di~n lho~i di d(ing leach vung X X X X X X X X X X X X · 580 lrong nllcic 560 Trang So cu{>c X -· X X " X X · - X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X ~ - - Trang chu3n 610 X X - Phal s6ng truyen hinh nuac Phut 620 X X - Phat s6ng truyen hinh ngoai nucic Ptout 625 - Truyen hinh h(ii nghj quoc te Phut - Truyen hinh h(ii nghj nllcic - Truyen bao X X 626 X X Phut 627 X X cai X X cai 630 - 631 X X - Thue bao ISDN 30 cai 632 - May di~n lho~i doanh !hac Cai 635 cili 636 ca; 640 - May di~n lho~i c6 djnh lhu cllcic - Thue bao ISDN - May d'i+n lho~i the (Payphone - May di•n lho~i c6 djnh nghi~p v~ cac lo~i) - May cli~n lho~i di d(ing nghi~p v~ - Tong dai di~n lho~i lhue rieng - Trung ke n(ii h~llhue rieng - Bao dliDng cap, c{>llhong tin - Elam lho~i c6ng c(ing n(ii h~l ~- · - ·-· - - - - - - - 670 Phut 690 X X X X X X X X X X X X X X X X X X X X X X X X · - -· X cai X -X X X - -641 · 650 Eloi day 660 · - - - - - - cai X X X · X X X X X X A · May telex thue rieng B c cai 700 -Cai - ·-· Cai - -· -C3i · · Thue bao truyen sO li~u · Thu! bao thll di~n Ill (VN mail) • Thue bao INTERNET • HC>p lhll th6ng tin (Voicelink ) cai ·- • May VT£) cho thu! cai · Kenh · K!nh th6ng tin cho thui! n9i h~t _ · · - K!nh • K6nh th6ng tin cho thu! nl)i tinh -· - -• K!nh th6ng tin cho !hue roen tinh Kenh · -· K!nh th6ng tin cho !hue ng~ nuil_c _ _ Ki!nh ·Tram VSAT cho thui! - - -~~ · - 720 -725 ·· 727 so phut (Phut kEt n6i) 740 -741 Phut 742 56 cuQc -~ ·trong nuilc s6 phul (Phul kEI nOi ) Phul 746 - Djch Yl! kEI n6i VoiP 178 ngo~i nU{Jc So cuQ