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M
memory map（內(nèi)存映射）
A table or diagram containing the name and address range of each peripheral addressable by the processor within the memory space. Memory maps are a helpful aid in getting to know the target.
一個(gè)在內(nèi)存空間中的，包含每個(gè)外設(shè)的名字和可由處理器設(shè)置的地址范圍的表格或圖表。內(nèi)存映射有助于了解目標(biāo)機(jī)情況。

memory-mapped I/O（內(nèi)存映射I/O）
An increasingly common hardware design methodology in which I/O devices are placed into the memory space rather than the I/O space. From the processor"s point of view, memory-mapped I/O devices look very much like memory devices.
一種日益流行的硬件設(shè)計(jì)方法，在這種方法中，I/O設(shè)備被放置在內(nèi)存空間而不是I/O空間。從處理器的觀點(diǎn)看，內(nèi)存映射I/O設(shè)備看上去很象內(nèi)存一樣。

memory space（內(nèi)存空間）
A processor"s standard address space. Contrast with I/O space.
一個(gè)處理器的標(biāo)準(zhǔn)地址空間。相對(duì)I/O空間。

Microcontroller（微控制器）
A microcontroller is very similar to a microprocessor. The main difference is that a microcontroller is designed specifically for use in embedded systems Microcontrollers typically include a CPU, memory (a small amount of RAM and/or ROM), and other peripherals on the same chip. Common examples are the 8051, Intel"s 80196, and Motorola"s 68HCxx series.
微控制器很像微處理器。主要的差別在于微控制器被特殊設(shè)計(jì)用在嵌入式系統(tǒng)中。微控制器典型地包括CPU、內(nèi)存（很小的RAM或ROM），還有其他的外設(shè)，它們?cè)谕粔K芯片上。常見(jiàn)的例子是：8051、Intel80196、Motorola68HCxx系列。

Microprocessor（微處理器）
A piece of silicon containing a general-purpose CPU. The most common examples are Intel"s 80x86 and Motorola"s 680x0 families.
一片包含通用CPU的硅片。常見(jiàn)的例子是：Intel80x86、Motorola 680x0系列。

Monitor（監(jiān)視器）
In the context of this book, a debug monitor. However, there is a second meaning for this word that is associated with intertask communication. In that context, a monitor is a language-level synchronization feature.
在這本書(shū)的上下文中，是指調(diào)試監(jiān)視器。然而，第二個(gè)意思與任務(wù)間通訊相關(guān)聯(lián)。在那個(gè)上下文中，監(jiān)視器是高級(jí)同步機(jī)制的特性。

Multiprocessing（多處理）
The use of more than one processor in a single computer system. So-called "multiprocessor systems" usually have a common memory space through which the processors can communicate and share data. In addition, some multiprocessor systems support parallel processing.
在單個(gè)的計(jì)算機(jī)系統(tǒng)中有多個(gè)處理器。被叫作“多處理器系統(tǒng)”的一般有公用的內(nèi)存空間，處理器通過(guò)它們進(jìn)行通訊和共享數(shù)據(jù)。另外，一些多處理器系統(tǒng)支持并行處理。

Multitasking （多任務(wù)）
The execution of multiple software routines in pseudo-parallel. Each routine represents a separate "thread of execution" and is referred to as a task. The operating system is responsible for simulating parallelism by parceling out the processor"s time.
偽并行運(yùn)行的多個(gè)軟件程序。每一個(gè)程序表現(xiàn)得像分開(kāi)的“執(zhí)行的線程”并且被看作是一個(gè)任務(wù)。操作系統(tǒng)通過(guò)分配處理器時(shí)間來(lái)模擬并行方式。

Mutex（互斥）
A data structure for mutual exclusion, also known as a binary semaphore. A mutex is basically just a multitasking-aware binary flag that can be used to synchronize the activities of multiple tasks. As such, it can be used to protect critical sections of the code from interruption and shared resources from simultaneous use.
表現(xiàn)互斥現(xiàn)象的數(shù)據(jù)結(jié)構(gòu)，也被當(dāng)作二元信號(hào)燈。一個(gè)互斥基本上是一個(gè)多任務(wù)敏感的二元信號(hào)，它能用作同步多任務(wù)的行為，它常用作保護(hù)從中斷來(lái)的臨界段代碼并且在共享同步使用的資源。

mutual exclusion（互斥現(xiàn)象）
A guarantee of exclusive access to a shared resource. In embedded systems, the shared resource is typically a block of memory, a global variable, or a set of registers. Mutual exclusion can be achieved with the use of a semaphore or mutex.
唯一訪問(wèn)共享資源的保證。在嵌入式系統(tǒng)中，共享的資源典型的有內(nèi)存塊或寄存器組。互斥現(xiàn)象能由使用信號(hào)燈或互斥完成。本文由容源電子網(wǎng)（www.ytjinfuren.com）整理提供，部分內(nèi)容來(lái)源于網(wǎng)絡(luò)，如有侵犯到你的權(quán)利請(qǐng)與我們聯(lián)系更正。

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