reset address(重啟地址) The address from which the first instruction will be fetched after the processor is powered on or reset. 一個(gè)處理器上電或重啟后第一個(gè)指令能被從之取出來(lái)的地址。
reset code(重啟代碼) A small piece of code that is placed at the reset address. The reset code is usually written in assembly language and may simply be the equivalent of "jump to the startup code." 一段被放置在重啟地址的代碼。重啟代碼一般用匯編語(yǔ)言編寫(xiě)并且可能相當簡(jiǎn)單,只是與”跳轉到開(kāi)始代碼”這樣的意思相同。
reset vector See reset address.
S SRAM(靜態(tài)隨機訪(fǎng)問(wèn)儲存器) Static Random-Access Memory. A type of RAM that retains its contents as long as the system is powered on. Data stored in an SRAM is lost when the system is powered down or reset. 靜態(tài)隨機訪(fǎng)問(wèn)儲存器。一種在系統上電時(shí)以保持它的內容的儲存器。當系統斷電或重啟時(shí),保存在SRAM中的內容將丟失。
Scheduler(調度程序) The part of an operating system that decides which task to run next. This decision is based on the readiness of each task, their relative priorities, and the specific scheduling algorithm implemented. 操作系統中決定下一次哪個(gè)任務(wù)運行的那部分。決定基于每一個(gè)任務(wù)的就緒,它們的優(yōu)先級關(guān)系,和特殊調度算法的實(shí)現。
Semaphore(信號燈) A data structure that is used for intertask synchronization. Semaphores are usually provided by the operating system. 用于進(jìn)程間同步的數據結構。信號燈常常由操作系統提供。
現場(chǎng)總線(xiàn)技術(shù)已經(jīng)廣泛應用于工業(yè)控制中,尤其是CAN(Controler Area Nerwork)總線(xiàn)由于具有可靠性高、成本低、容易實(shí)現等優(yōu)點(diǎn),在現場(chǎng)總線(xiàn)實(shí)際工程應用中占有了較大份額。 關(guān)鍵詞:單片機 所屬欄目:設計編程