程序指令

The 8087 s instructions are estimated with beta distribution and normal distribution separately, the whole program s execution time is approximated with normal distribution after adding instruction.

分别用贝塔分布和正态分布模拟8087指令的运行时间，进行指令叠加后用正态分布模拟整个程序的运行时间；实验结果表明，基于分布函数的程序执行时间预估方法是可行的；最后对估计出来的时间区间作了调整。

In other words, when a branch in the code the computer was processing occurred (that is, there is an unanticipated call to another section of the program that necessitates another call to memory), instead of stalling the pipeline to retrieve the instructions that were branched to, the computer added a delaying instruction behind the branch that either did something useful while the other instructions were called, or at worst did nothing at all.

换句话说就是，当计算机执行的代码中出现了分支(就是说，发生了不可预料的对程序中其他程序段的调用，即必须实现一个新的访问存储器的操作)时，计算机不是停止这条流水线的工作去修复被分解的指令，而是在这个分支指令后增加一个延迟指令，该指令在其他指令被调用时，要么做一些有用的事情要么执行空操作。

1 Documentation System and Pecifications Specifications, instructions, procedures, and records can be retained either as originals or as true copies such as photocopies, microfilm, microfiche, or other accurate reproductions of the original records.

规格，指令，程序，和记录需要保留，包括原始的和复制件，规格，指令，程序，和记录需要保留，包括原始的和复制件，例如照像复制本和缩影胶卷，缩微平片，例如照像复制本和缩影胶卷，缩微平片，或者其他的原始记录的准确复制。

Experiment, the computer s data path, CPU removed from memory machine instructions, interpretation, execution will be composed of sequential microinstruction to complete, that is, a machine instruction corresponding to a microprogram.

实验中，计算机的数据通道、CPU从内存中取出机器指令，解释、执行指令都将由微指令组成的时序来完成，即一条机器指令对应一个微程序。

Experiment, the computer s data path, CPU removed from memory machine instructions, interpretation, execution will be composed of sequential microinstruction to complete, that is, a machine instruction corresponding to a micro-program.

实验中，计算机的数据通道、CPU从内存中取出机器指令，解释、执行指令都将由微指令组成的时序来完成，即一条机器指令对应一个微程序。

A topdown design of an 8bit RISC MCU is presented, in order to overcome the limitation of MCS51 microcontroller The core is based on Harvard architecture with 16bit instruction length and 8bit data length The performance of the MCU has been greatly improved by introducing singleclockcycle instructions, setting multiple highspeed working registers, replacing microprogram with direct logic block, etc FPGA verification and computer simulation show that its maximum clock frequency and instruction e...

在对传统的MCS51系列单片微控制器的局限性进行分析的基础上，设计了一种基于增强8位RISC构架的微控制器内核。该MCU核采用哈佛结构、16位指令字长和8位数据字长，通过设计单周期指令、在内部设置多个快速寄存器及采用硬布线逻辑代替微程序控制的方法，加快了微处理器的速度，提高了指令的执行效率。计算机仿真验证和FPGA仿真验证的结果表明，该MCU的最高时钟频率和指令执行效率等指标均优于MCS51的5倍以上。

Real Programmers know every nuance of every instruction and use them all in every Real Program.

真正的程序员知道每一个指令的细微差别，并在程序中使用所有的指令。

High-performance RISC CPU · Only 35 single-word instructions to learn - All single-cycle instructions except for program branches which are two-cycle · Operating speed: DC - 20 MHz clock input DC - 200 ns instruction cycle · Interrupt capability (up to 7 internal/external interrupt sources)· 8-level deep hardware stack · Direct, Indirect and Relative Addressing modes

高性能的RISC CPU·只有35单条指令学习-除了程序分支是两个周期·工作速度：直流- 20 MHz的时钟输入DC - 200 ns的所有单周期指令指令周期·中断能力（/外部中断源，高达7内部）·8级深硬件堆栈·直接，间接和相对寻址方式

Selecting in-house software of sub-routines to run in connection with program; writing machine instruction, testing , debugging, and assembling program; documenting overall system and developing data control procedures; advising and instructing less experienced programmers and offering operating instructions.

选择同程序相关的机内软件或予程序；编制计算机指令；检测、改正程序中的差错并组合程序；编制总系统并制定数据控制程序；指导经验不足的程序员并给予操作指导。

Selecting in-house software of sub-routines to run in connection with program; writing machine instruction, testing , debugging, assembling program; documenting overall system developing data control procedures; advising instructing less experienced programmers offering operating instructions.

选择同程序相关的机内软件或予程序；编制计算机指令；检测、改正程序中的差错并组合程序；编制总系统并制定数据控制程序；指导经验不足的程序员并给予操作指导。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。