two-layer operation system 中文意思是什麼
two-layer operation system
解釋
雙層經營體制-
While the key of embedded system software is embedded operation system ; one of the main works in os application is to write the hal ( hardware abstraction layer ) code. two open source code embedded operation system - uc / os and embedded linux were analyzed in this paper
文中作者以broadcom主板為硬體平臺（基於motorola通信處理晶元mpc850 ）對兩種公開源代碼的操作系統uc os和嵌入式linux進行了研究與應用設計，其中的關鍵步驟是編寫硬體抽象層介面程序。 -
Ethernet maps the two lowest layers of osi model ( seven - layer module ) : data link layer and physical layer and divides them to some function sublayers including pcs ( physical coding sublayer ), pma ( physical medium attachment ) and pmd ( physical medium depend ) in physical layer. in these sublayers, logical link control ( llc ) is implemented through operation system, nic driver software and medium access control ( mac ) and the physical layer below it are implemented by the nic
以太網對應了osi開放系統模型（ 7層網路模型）的最下兩層：數據鏈路層和物理層，並將其細分為一些功能子層，包括數據鏈路層的llc （邏輯鏈路控制）子層和mac （介質訪問控制）子層，物理層的pcs （物理編碼子層） 、 pma （物理介質附加子層）和pmd廈門大學碩士學位論文摘要（物理介質相關于層） 。 -
There are two techniques to implement that, the first is enterprise compute architecture six - layer model that contain hnl ( hardware network layer ), osl ( operation system layer ), dbl ( database layer ), asl ( application server layer ), bfl ( business framework layer ), bsl ( business system layer ) ; the second is business framework model which depart enterprise application system into many business components. the business components are independent and provide services to others through their consistent interface
前者說明了xerp系統的六個層次，分別是硬體網路層hnl 、操作系統層osl 、數據庫層dbl 、應用服務器層asl 、業務框架層bfl和業務系統層bsl 。業務框架模型把企業的應用分解為許多業務組件，相當于erp中的功能模塊，各業務組件之間相互獨立，通過一致的介面對其它組件提供服務。
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