請(qǐng)使用英文狀態(tài)下的標(biāo)點(diǎn)符號(hào)

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HINTS：Users of so-called “dumb” terminals (i.e. those without processing capability)

????????? PC

????????? key-board

Online services are managed by a host system that maintains a base of information available to satellite users. Users of so-called "dumb" terminals, that is those without processing capability, simply access the information base via programs stored on the system. Personal computer users typically access the host through a modem. A PC software program serves as an interface between the server and a PC, allowing the user to operate through the online system and select different databases using a key-board or a mouse.
在線服務(wù)在一個(gè)主系統(tǒng)管理之下，使保持現(xiàn)有衛(wèi)星用戶基礎(chǔ)信息管理成為可能。所謂的“傻瓜”終端用戶（即沒有處理能力的）通過隱藏著系統(tǒng)背后的程序，就可以輕松地訪問信息庫(kù)了。個(gè)人計(jì)算機(jī)用戶通常通過調(diào)制解調(diào)器訪問主機(jī)。一個(gè)PC軟件程序就可以作為一個(gè)接口，連接用戶和PC機(jī)，這樣用戶通過鍵盤或者鼠標(biāo)，就可以通過在線系統(tǒng)操作和選擇不同的數(shù)據(jù)庫(kù)了。 ——譯文來自: 帥菲兒