电气、智能-201308课件7单词

Vocabulary6

Computer(2)1.n.

域，字段

n.

操作码n.

操作数n.

指令

n.

程序

instructionsetstoredprogramapplicationprogramminginterface2.n.

文件

n.

脚本documentfilearchivefilebackupfiledestinationfile

databasescript3.n.

调制

pulsecodemodulationquadratureamplitudemodulationVocabulary3:Computer(2)指令集存储程序应用程序接口文档文件目标文件存档文件备份文件数据库脚本脉冲编码调制正交幅度调制4.adj.

单一的，单工的

adj.

全双工的simplexcommunicationfullduplexcommunication5.n.信道

adj.

多路传输的，复用channelcapacitychannelmultiplexingtime-divisionmultiplexfrequency-divisionmultiplex6.差错控制n.校验n.校正errorcorrectingcodeforwarderrorcorrectionparitycheckredundancycheckevenparityoddparitynoparitycheckparitybitbiterrorrate**transmissiondisturbance传输干扰signalnoiseratio信噪比Vocabulary3:Computer(2)单工通信全双工通信信道容量信道复用时分复用频分复用奇偶校验冗余校验偶校验奇校验校验位误码率7.高级语言

机器语言DDLXMLHTMLSQL源代码

目的代码

***pointer指针，指示器addressn.

寻址retrievev.

检索8.n.协议TCP/IP

传输控制协议/因特网互联协议

FTPVocabulary3:Computer(2)datadefinition/manipulationlanguage

数据定义/操作语言extensiblemarkuplanguage可扩展标记语言hupertextmarkuplanguage超文本链接标志语言structuredquerylanguage结构化查询语言TransmissionControlProtocol/InternetProtocolfiletransferprotocol文件传送协议9.可编程逻辑控制器PLCsaredisklesscompactcomputersincludingallthenecessarysoftwareandhardwareinterfacestotheprocess.AtypicalPLCconsistsinapowersupply,aCPUwheretheuserprogramruns,input/outputmodulesandoptionalcommunicationmodules.TheavailableI/Omodulessupportawiderangeofelectricalinterfaces:analogmodule

(+/-10V,+/-1V,4-20mA,etc.),temperaturemeasurement,digitalmodule,TTLmodule,RS232module,etc..PLC-basedsolutionsarewelladaptedtotwo-levelcontrolarchitectureswherethefront-endlayerhastobeautonomousandindependentfromthesupervisionlayer.Vocabulary3:Computer(2)PLCsoperateinapollingmodewithapreciseexecutioncycle,whichconsistsinthreesteps,termed“readinputs”,“operateuserprogram”and“writeoutput”.ThedevelopmentofPLCprogramsistwofolds.OneshalldefinethehardwareconfigurationofthePLCandproducetheuserprogramsourcecode.StandardizedprogramminglanguagesofPLCs:sequentialfunctionchartsladderdiagramfunctionblockdiagramstructuredtextinstructionlistVocabulary3:Computer(2)顺序功能图梯形图功能块图结构化文本指令表10.单片机A

microcontroller

(or

MCU)

is

a

computer-on-a-chip,which

is

a

type

of

microprocessor

emphasizing

self-sufficiencyandcost-effectivenessin

contrast

to

a

general-purpose

microprocessor

(the

kind

used

in

a

PC).

Asingle-chipmicrocomputerinvolvesaROM,aRAM,aCPU,parallelI/Omodules,serialI/Omodules,timer/counterfacilities

andtimingcomponents.*****strobev.

选通，发选通脉冲*****most-significantbit(MSB)最高有效位*****least-significantbit(LSB)最低有效位Vocabulary3:Computer(2)11.数字信号处理器A

DSPisasuper-fastchipcomputer,whichhasbeenoptimizedforthedetection,processingandgeneration

ofrealworksignalssuchasvoice,video,music,etc.inrealtime.12.嵌入式系统Anembeddedsystemisdefinedas“amicroprocessorbasedsystemthatdoesnotlooklikeacomputer”or“acombinat