No.83873
作者：521MCU
邮件：5563263@163.com
ID：41999
登陆：1次
文章数：4篇
最后登陆IP：210.82.111.154
最后登陆：2005/9/20 9:58:15
注册：2005/9/20 9:23:47
财富：130
发帖时间：2005/9/20 9:58:15
发贴者IP：210.82.111.154
标题：521MCU:嵌入式系统词汇表㈢
摘要：No.83873嵌入式系统词汇表㈢ NVRAM
Non-Volatile Random-Access Memory. A type of RAM that retains its data even
when the system is powered down. NVRAM frequently consists of an SRAM and a
long-life battery.
非易失的随机访问存储器。一种能在系统关机的情况下保持它的数据的RAM。NVRAM常常由SRAM和长寿命电池组成。
O
OTP
See one-time programmable.
object code（目标代码）
A set of processor-readable opcodes and data. The output of compilers,assemb
lers, linkers, and locators are files containing object code.
处理器能读的操作码和数据。编译器、汇编器、连接器和定位器的输出文件都含有目标代码。
object file（目标文件）
A file containing object code. The output of a compiler or assembler.
包含目标代码的文件。编译器或汇编器的输出。
one-time programmable（一次可编程的）
Any programmable device, like a PROM, that can be programmed just once by th
e end user. However, this term is used almost exclusively to refer to microc
ontrollers with on-chip PROM.
任一可编程的设备，像PROM，仅仅能被最终用户编程一次。然而，这个术语一般被专有地使用在拥有片上PROM的微控制器上。
opcode
A sequence of bits that is recognized by the processor as one of the instruc
tions in its instruction set.
一串被处理器验证过的二进制位的序列，它作为其指令集的一个子集。
operating system（操作系统）
A piece of software that makes multitasking possible. An operating system ty
pically consists of a set of function calls, or software interrupts, and a p
eriodic clock tick. The operating system is responsible for deciding which t
ask should be using the processor at a given time and for controlling access
to shared resources.
使多任务能够实现的一个软件。一个操作系统典型地由一个函数调用集、软件中断和定期时钟周期组成。一个操作系统负责决定哪一个任务在给定的时间将使用处理器，并且控制对共享资源的访问。
Oscilloscope（示波器）
A hardware debugging tool that allows you to view the voltage on one or more
electrical lines. For example, you might use an oscilloscope to determine i
f a particular interrupt is currently asserted.
一种硬件调试工具，它让你能观察到一个或更多电路上的电压。例如：如果一个特殊的中断发生，你可以用一个示波器去检测它。
P
PROM（可编程只读存储器）
Programmable Read-Only Memory. A type of ROM that can be written (programmed
) with a device programmer. These memory devices can be programmed only once
, so they are sometimes referred to as write-once or one-time programmable d
evices.
可编程只读存储器。能被设备编程器写的一种ROM。这种内存设备可以被编程一次，所以它们有时被作为写一次或一次性编程设备来看待。
parallel processing（并行进程）
The ability to apply two or more processors to a single computation.
一种在单个计算机上运行两个或多个程序的能力。
Peripheral （外设）
A piece of hardware other than the processor, usually memory or an I/O devic
e. The peripheral may reside within the same chip as the processor, in which
case it is called an internal peripheral.
一种不同于处理器的硬件设备，常指内存或I/O设备。外设经常和处理器在一片芯片上，
在这种情况下，它被称为集成外设。
physical address（物理地址）
The actual address that is placed on the address bus when accessing a memory
location or register.
当访问内存位置或寄存器时，在地址总线上的真实的地址。
Preemptive（抢先）
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