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Сети и телекоммуникации

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ASCII-nZceu b [bgZjgu_ nZceu

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M^h[gh jZa^_eblv \k_ kbf\heu lZ[ebpu ASCII gZ ^\_ ]jmiiu dhlhju_ ihemqbeb gZa\Zgb_ i_qZlZ_fu_ (printable b g_i_qZlZ_fu_ beb ki_pbZevgu_ kbf\heu non-printable g_ imlZlv k g_i_qZlgufb

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ASCII-nZceu g_ lhevdh ]ZjZglbjh\Zggh ijZ\bevgh i_qZlZxlky gh b [_a bkdZ`_gbc b dZdbo-eb[h ij_h[jZah\Zgbc i_j_^Zxlky \ ex[uo kbkl_fZo l_e_dhffmgbdZpbc <k_ `_ ijhqb_

nZceu gZau\Z_fu_ [bgZjgufb lj_[mxl [he__ hklhjh`gh]h h[jZs_gby G_dhlhju_ k_l_\u_ ijhlhdheu gZijbf_j FTP kf klj

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Qlh[u hlijZ\blv \ ibkvf_ ]jZnbq_kdh_ bah[jZ`_gb_ beb bkihegy_fuc nZce _]h gm`gh h[jZ[hlZlv ki_pbZevghc ijh]jZffhcbeb ki_pbZevghc nmgdpb_c \Zr_c ihqlh\hc ijh]jZffu dhlhjZy aZrbnjm_l kh^_j`bfh_ nZceZ gZ[hjhf i_qZlZ_fuo kbf\heh\ ASCII. IhemqZl_ev ibkvfZ ^he`_g [m^_l ijh^_eZlv h[jZlgh_ ij_h[jZah\Zgb_ qlh[u ihemqblv bkoh^guc [bgZjguc nZce Ih^jh[g__ h kihkh[Zo lZdhc rbnjh\db b h k\yaZgguo k wlbf ijh[e_fZo fu [m^_f ]h\hjblv \ ]e

=^_ \wylv ijhklhc $6&,,-nZce

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ASCII-nZceZfb — CONFIG.SYS b AUTOEXEC.BAT Ijhqb_ `_ \Zrb l_dklh\u_ nZceu gZ\_jgydZ aZibkZgu \ g_dhlhjhf nhjfZl_ gZijbf_j \ nhjfZl_ Microsoft Word b djhf_ kZfh]h l_dklZ lZf _klv dZdb_-lh ki_pbZevgu_ kbf\heu

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D kh`Ze_gbx g_dhlhju_ maeu Bgl_jg_lZ aZ ij_^_eZfb gZr_c kljZgu kqblZxl ki_pbZevgufb \k_ kbf\heu \lhjhc iheh\bgu lZ[ebpu ASCII \ lhf qbke_ — b \k_ [md\u dbjbeebq_kdh]h ZenZ\blZ KZfu_ [_a`Zehklgu_ ba lZdbo maeh\ ijhklh ©h[jm[Zxlª l _ h[gmeyxl klZjrbc [bl dZ`^h]h [ZclZ l_f kZfuf ij_\jZsZy ijhoh^ysb_ q_j_a gbo ibkvfZ gZ jmkkdhf yaud_ \ [_kkfuke_gguc gZ[hj eZlbgkdbo [md\ d kqZklvx k_cqZk lZdbo maeh\ hklZehkv m`_ g_fgh]h >jm]b_ maeu ©gZ \kydbc kemqZcª rbnjmxl ijhoh^ysmx ihqlm dZdbf-lh ba mihfygmluo \ur_ f_lh^h\ k\h^y __ d gZ[hjm i_qZlZ_fuo kbf\heh\ Ih`Zemc emqrbc kihkh[ aZkljZoh\Zlvky hl \k_o g_h`b^Zgghkl_c — rbnjh\Zlv k\hb ibkvfZ kZfhklhyl_evgh i_j_^ hlijZ\dhc ij_^\Zjbl_evgh m[_^b\rbkv qlh \Zr Z^j_kZl mf__l jZkrbnjh\u\Zlv bo h[jZlgh Ijb h[f_g_ ihqlhc \gmljb Jhkkbb h[ wlhf fh`gh g_ ^mfZlv — a^_kv \u ^he`gu ebrv ke_^blv aZ ijZ\bevghc gZkljhcdhc dh^bjh\db DHB

DZd ZZdhgqblv kljhdm

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GWD Text Editor ^ey Windows, http://www.iridis.com/ gwd/index.htm; Semware Editor ^ey DOS, ftp://ftp.med.auth.gr/pub/ msdos/word_print/semedit. zip).

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Ihke_^h\Zl_evgZy b iZjZee_evgZy k\yav

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:kbgojhggZy b kbgojhggZy k\ywv

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:kbgojhggZy i_j_^ZqZ ^Zgguo hlebqZ_lky ]b[dhklvx lZd dZd iha\hey_l i_j_kueZlv ^Zggu_ kh kdhjhklvx m^h[ghc dZd ^ey

i_j_^ZlqbdZ lZd b ^ey ijb_fgbdZ Gh \ lh `_ \j_fy hgZ g_^hklZlhqgh wnn_dlb\gZ ihkdhevdm dZ`^uc [ehd i_j_kueZ_fuo ^Zgguo ijboh^blky kgZ[`Zlv ki_pbZevgufb fZjd_jZfb \ gZqZe_ b dhgp_ — qlh[u ijb_fgbd agZe dh]^Z gZqbgZlv b dhgqZlv ijb_f hq_j_^gh]h [ehdZ Ijb_fgbd `_ gZ dZ`^uc [ehd ^Zgguo ^he`_g hl\_qZlv ih^l\_j`^_gb_f qlh \k_ ijbgylh [_a hrb[hd GZ \k_ wlh ljZlblky ^jZ]hp_ggh_ \j_fy b \ j_amevlZl_ kdhjhklv i_j_^Zqb aZ-\ f_lgh kgb`Z_lky

< ijhlb\hiheh`ghklv wlhfm kbgojhggZy (synchronous i_j_^ZqZ hlebqZ_lky \ukhdhc kdhjhklvx gh fZehc ]b[dhklvx I_j_^Zlqbd ^h]h\hjb\rbkv k ijb_fgbdhf h iZjZf_ljZo k\yab gZqbgZ_l keZlv ^Zggu_ kiehrguf ihlhdhf [_ah \kydh]h jZa^_e_gby gZ [ehdb — ijb_fgbdm hklZ_lky ebrv eh\blv b g_ a_\Zlv Dhg_qgh kbgojhggZy i_j_^ZqZ om`_ aZsbs_gZ hl ihf_o — \_^v klhbl g_ jZkkeurZlv h^bg [bl dZd ^Zevr_ \k_ ih_^_l \djb\v b \dhkv

Kh[kl\_ggh ]h\hjy bf_ggh ih wlhc ijbqbg_ kbgojhggu_ ijhlhdheu \ qbklhf \b^_ ^ey fh^_fghc k\yab g_ ijbf_gyxlky

[hevrbgkl\h kh\j_f_gguo ijhlhdheh\ \ ^_ckl\bl_evghklb Zkbgojhggu_ gh kh kjZ\gbl_evgh [hevrbf jZaf_jhf [ehdZ ^Zgguo KZfh `_ kh^_j`bfh_ [ehdZ dZd ihgylgh \ ex[hf kemqZ_ i_j_^Z_lky \ kbgojhgghf j_`bf_

L_f g_ f_g__ l_jfbg ©Zkbgojhggu_ª aZdj_ibeky lhevdh aZ lZdbfb ijhlhdheZfb \ dhlhjuo jZaf_j [ehdZ jZ\_g h^ghfm [Zclmh[jZfe_gghfm klZjlh\ufb b klhih\ufb [blZfb h dhlhjuo j_qv ihc^_l gb`_ < gZklhys__ \j_fy lZdb_ ijhlhdheu kqblZxlky mklZj_\rbfb b kh\j_f_ggu_ fh^_fu bkihevamxl \ hkgh\ghf ©kbgojhggu_ª ijhlhdheu \ dhlhjuo jZaf_j [ehdZ agZqbl_evgh [hevr_

Ihem^mie_dkgZy b ^mie_dkgZy k\yav

<Z`ghc oZjZdl_jbklbdhc dZgZeh\ b ijhlhdheh\ k\yab y\ey_lky lh ^himkdZxl eb hgb ^mie_dkgmx (duplex k\yav < i_j_\h^_ gZ jmkkdbc yaud wlh hagZqZ_l fh`gh eb ih wlhfm dZgZem beb k bkihevah\Zgb_f wlh]h ijhlhdheZ ]h\hjblv \ h[_ klhjhgu — lh _klv fh`_l eb ijb_fgbd klZlv i_j_^Zlqbdhf b gZh[hjhl

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DZd jZ[hlZ_l fh^_f

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FH^meylhj >?Fh^meylhj FH>?F

Fh^meypby b ^_fh^meypby

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G_kmsZy

G_ ijZ\^Z eb agZdhfu_ l_jfbgu — fh^meypby ^_fh^meypby" Qlh-lh k\yaZggh_ k jZ^bh b k mjhdZfb nbabdb \ rdhe_

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qZklhlu — wlh b _klv lhl kZfuc ©bkoh^gucªZgZeh]h\uc kb]gZe k dhlhjuf ijhba\h^ylky \k_ ^Zevg_crb_ baf_g_gby iZjZf_ljh\ l _ fh^meypby

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Kdhjhklv i_j_^Zqb ^Zgguo

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<h^u

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;blu \ k_dmg^m

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G_ ke_^m_l imlZlv iZjZf_lj ©baud rateª \ gZkljhcd_ ijh]jZffu b « bps rateªh dhlhjhf \u qblZ_l_ \ bgkljmdpbb d fh^_fm

kd

?s_ h^gZ _^bgbpZ ^ey baf_j_gby kdhjhklb i_j_^Zqb ^Zgguo ijbf_gy_fZy gZ ijZdlbd_ — CPS (characters per second kbf\heh\ — l _ [Zcl — \ k_dmg^m Wlhc _^bgbp_c h[uqgh baf_jyxl kdhjhklv i_j_^Zqb ihe_aghc bgnhjfZpbb dhlhjZy fh`_l kbevgh baf_gylvky \ aZ\bkbfhklb hl dZq_kl\Z ebgbb b ijhlhdheZ k\yab ^Z`_ ijb h^ghf b lhf `_ agZq_gbb kdhjhklb \ [bl k lZd dZd qZklv \j_f_gb k\yab \k_]^Z ljZlblky gZ ih^l\_j`^_gb_ ijb_fZ bkijZ\e_gb_ hrb[hd b ijhqb_ kem`_[gu_ gZ^h[ghklb

Hl q_]h `_ aZ\bkbl ijhimkdgZy kihkh[ghklv fh^_fZ" Ihgylgh qlh kZf dhfivxl_j fh`_l i_j_kueZlv ^\hbqgu_ ^Zggu_ hq_gv ^Z`_ [ukljhihijh[mcl_ kdhibjh\Zlv [hevrhc nZce k h^gh]h jZa^_eZ \bgq_kl_jZ gZ ^jm]hc — g_ ijZ\^Z eb \i_qZley_l" Kh[kl\_ggh fh^meypby lh _klv ij_\jZs_gb_ pbnjh\h]h kb]gZeZ \ ZgZeh]h\uc lh`_ g_ [h] \_klv dZdZy keh`gZy ijhp_^mjZ Ihq_fm `_ lh]^Z i_j_kuedZ ^Z`_ g_[hevrh]h nZceZ q_j_a fh^_f fh`_l klZlv aZgylb_f gZ p_euc \_q_j"

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D kh`Ze_gbx \k_fm _klv ij_^_e Ih^kqblZgh qlh ]jZgbpZ ijhimkdghc kihkh[ghklb dhffmlbjm_fh]h l_e_nhggh]h dZgZeZ e_`bl ]^_-lh \ jZchg_ —

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KlZg^Zjlu kdhjhklb b fh^meypbb

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<h-i_j\uo \k_ fh^_fu ihevamxlky klZg^Zjlgufb kdhjhklyfb i_j_^Zqb ^Zgguo <u gbdh]^Z g_ gZc^_l_ fh^_fZ kdZ`_f gZ

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: \h-\lhjuo ex[hc fh^_f ^he`_g ih^^_j`b\Zlv g_ lhevdh k\hx fZdkbfZevgmx kdhjhklv b khhl\_lkl\mxsbc kihkh[ fh^meypbb gh b \k_ f_gvrb_ kdhjhklb — qlh[u bf_lv \hafh`ghklv k\yau\Zlvky k [he__ f_^e_ggufb fh^_fZfb LZd fh^_f gZ D[bl k k\yaZ\rbkv k fh^_fhf gZ D[bl k i_j_oh^bl gZ kdhjhklv

D[bl k lZd dZd wlh — kZfZy \ukhdZy ba l_o kdhjhkl_c gZ dhlhjuo hgb h[Z fh]ml jZ[hlZlv lZdh_ ih^kljZb\Z-gb_ kdhjhkl_c gZau\Z_lky ihZg]ebckdb ©rate negotiationª < k\hx hq_j_^v fh^_f gZ D[bl k lZd`_ ih^^_j`b\Z_l \k_ klZg^Zjlgu_ kdhjhklb f_gvrb_ D[bl k

— gZqbgZy k [bl k

;he__ lh]h ^Z`_ _keb h[Z k\yaZ\rboky fh^_fZ fh]ml jZ[hlZlv gZ kdhjhklb D[bl k iehob_ mkeh\by k\yab — rmf \ ebgbb djZldh\j_f_ggh_ ijhiZ^Zgb_ g_kms_c — fh]ml aZklZ\blv bo i_j_clb gZ dZdmx-lh ba f_gvrbo kdhjhkl_c ij_^mkfhlj_gguo

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