???í?????±?¤?????ù?ê????30?ê???ó?à???±?¤?à?±?ê?á????±??????????ò×é??????·??±?????????±??????°??±????×??ó?§???????í?à???í???í?ü???????????????????????????ê?á?????ò???ê?á???ü???×?????°???í?????±??????
?????????????????í?????××????????±??????·?·¨?????±±????¤??????±????¤°??×???é?????¤?÷???á???°???????????????±?????????ò?????????????????í?????ù??°ì·¨????°???????????·??±??°ì·¨?????????ò???í???í????·??±???????¤???????ú?·???í?????§?§???¤?????????§?à?????±?????í???ê?????????±???ó??50?ù???ú?ó?§?????????±?????????ó?§?????±????????·?????(??±??????????????§?§???¤???????????±)???°?ú???§???????????±?¨??????×?????×é???????????í???????é?¤×÷?????????????????????ú?·????×??????±?????????????????????ò???????????????í×????????????????????????±?????±?????????±?????????í??????????????
??80?ê?ú??90?ê?ú????????·?·¨?????ó±?????WindowsNT×é????·????í?÷·ò?¤???????????????????±??×÷???°???í??????·??±??·?·¨??
?????°????????????±??????????????????ù×??¤???¤×÷?????ó???????é?????????é???±???????????ù±??à????±??????ó??±????????????ì????????4??6??????????????×??ó????????×÷????????????????????????±???????????????·????é???ú???????????±?????????????????ü?ò????????°??ú???í??????????????????????????????·????í???????????à????·??????????????????????????????±?¨???í?à?±???????????????????????????????????????¨?±??????±???????·??????????????ò??????×÷????????????
?±????·??????ì???????????????§?????±?????????????????????±???????????????·?????????????é?????ì???????????????????ù?????ü?????????????????????í???±???????????????????????????±?????????á????×??¨???§°?????
???í×??????????¤×÷???????ú?·×é?°????????????????????·??±??????????·??±?????????????????±?????????????±???????????¤×÷???????à???????????????????????é?ó?????¨?????????????????????????????ò?????????à??±à???ò?????????????ò???????????????ú??????ר?¤(?????¨?????±??????????????????????????????ר?????????????????????????±????????±?×÷??????????????????????????????×???????)???í??????????????°???????°ü?¨?????????÷?÷±??????????÷???ò???ú??????????????±???????????°??¨??????????????????·?????????·?·¨????±???????
???¨???????????±?à???????????ó?§????????·??±?±?????í?¨??????????????10????15????×???????????????×??ó?????????????±??10????15????×????????????í?????????????????±??2????3?????????¤???????????í???????±×????????????????????±?????°???????????????????????????à?±????????????±??¤?????????ù??????????????±??????????????¨????????????????????±????¨?????????ì×??????°?????????????????????±
????±????????????±???????????????????????é?????????é??????×????ê?????????á??????±????????é???ò????????????×????í?????????¨×???×???(???????????±?ó??????X???????í???÷???÷?ù??????????????°ì???????°?§???à?????????????????ü??????????????·??°???????÷??????????????????????????×????¨?????¨????)?????????????¤?±???¤×÷?????????á???????????í?±?¤??????±????????????????????????÷·ò?¤?????è???????í?????????ì?????????°?????í?é???????ù??????????????????°à??????????????????????????????????×????????????????????????????????±?¤×÷???±?????????????????ó???????????????±
?????ü?????????é???±???????????í?????????à?????????¤×????????¨???????????±???????????????????±?????????ò???é?????????±?§????°à·??????????????è??????????°à·?????????????1982?ê????????·?·??ê???±???????????±????????90?ê?ú?????à???????????à?±???????ò?????í?????±???????????????????±????????????°ü?¨????15???????ê???????±???????±?????¨???°???¤×????ò???±?±?í??????????(???????±?????í?¤×÷18?????ó?????????????????¨??25???????±?????ó??6??????????????????12??5????10?ê?????????±???????????????¨????2?ê????·??????????¨?????±??????????????lo?????¤×???85?????????????ò???????±