計(jì)算機(jī)專業(yè)英語輸入和輸出市公開課獲獎(jiǎng)?wù)n件

1、5CHAPTERInput and output（輸入和輸出）computing ESSENTIALS 1第1頁第1頁Competencies（能力）Input devicesDigitizingOutput devicesMultifunctional devicesTelephonyTerminalscomputing ESSENTIALS 2第2頁第2頁Input（輸入）Data or instructionsDirectly from userFrom other sourcesInput deviceHardware to provide input to computercompu

2、ting ESSENTIALS 3第3頁第3頁Input Devices（輸入設(shè)備）KeyboardsPointing devicesScannersImage capture devicesAudio capturecomputing ESSENTIALS 4第4頁第4頁Keyboards（鍵盤）Most common input deviceCharacters, numbers, symbols converted to electrical signalTypewriter keyboard, numeric keypad, special keysNavigation keysFun

3、ction keysWindows keycomputing ESSENTIALS 5第5頁第5頁Keyboards（鍵盤）Toggle keysTurns a feature on or offCaps LockCombination keysHeld down in combination with another keyControl key, Alt keycomputing ESSENTIALS 6第6頁第6頁P(yáng)ointing Devices（定點(diǎn)設(shè)備）Control a pointer on the monitorUsed to select buttons, menus, lin

4、ks MouseMost common pointing deviceMechanicalOpticalWirelesscomputing ESSENTIALS 7第7頁第7頁P(yáng)ointing Devices （定點(diǎn)設(shè)備）Trackball(軌跡球)Move roller ball with thumbTouch surface(觸摸板)Move finger across surface of padTap to selectPointing stick (觸摸桿)Middle of keyboardMove with fingercomputing ESSENTIALS 8第8頁第8頁P(yáng)o

5、inting Devices （定點(diǎn)設(shè)備）Joystick(操縱桿)Popular for computer gamesUser grips stick to maneuverTouch screen (觸摸屏)Special monitorScreen layer with crisscrossed beams of infrared lightSelect by touching screen directlycomputing ESSENTIALS 9第9頁第9頁Scanning Devices（掃描設(shè)備）Copy data from a sourceTypes of scannersO

6、ptical scanner Bar code readersCharacter and Mark recognitioncomputing ESSENTIALS 10第10頁第10頁Optical Scanners（光電掃描儀）Copy text or imagesCan be displayed, printed, or storedTypes of optical scannersFlatbed scannerSource placed on glass surfaceImage scanned from belowPortable scannerHandheld device that

7、 slides across sourcecomputing ESSENTIALS 11第11頁第11頁Bar Code Readers（條形碼閱讀器）Photoelectric scannerRead bar codesAlternating black & white vertical barsUniversal Product Code (UPC)Seen in grocery stores, retail storescomputing ESSENTIALS 12第12頁第12頁Character & Mark Recognition（字符和標(biāo)志辨認(rèn)）Magnetic-ink char

8、acter recognition (MICR)Reads magnetically encoded charactersOptical-character recognition (OCR) Reflects light off special preprinted charactersOptical-mark recognition (OMR)Senses presence or absence of markscomputing ESSENTIALS 13第13頁第13頁Image Capturing Devices（圖像捕獲設(shè)備）Create or capture original i

9、mages (圖像/影像創(chuàng)建或捕獲)Digital camera (數(shù)碼攝像機(jī))Image recorded digitally to memoryDigital video cameras(數(shù)碼照相機(jī))Capture motionWebcams(網(wǎng)絡(luò)照相)Capture images for broadcast on Internetcomputing ESSENTIALS 14第14頁第14頁Digitizing Devices（數(shù)字化設(shè)備）Capture sketches, maps, drawingsFlat surface, writing deviceTypesGraphics t

10、abletsSpecial tablet, stylusDigital notepadsRegular paper, pencomputing ESSENTIALS 15第15頁第15頁Audio-Input Devices（音頻輸入設(shè)備）Convert sound into digital formatVoice recognition systemOperate computer by voice commandDictationMicrophone, sound card, softwareDiscrete Continuouscomputing ESSENTIALS 16第16頁第16

11、頁Voice Recognition Systems Types（聲音辨認(rèn)系統(tǒng)類型）Recognize individual words based on sound Discrete-speech recognitionCannot distinguish same-sound wordsContinuous-speech recognitionCan distinguish same-sound wordsEvaluates context of wordscomputing ESSENTIALS 17第17頁第17頁Output（輸出）Processed data from a comp

12、uterText, graphics, photos, audio, videoCommon output devicesMonitorPrinterPlotterVoicecomputing ESSENTIALS 18第18頁第18頁Monitors（監(jiān)視器）Most frequently used output deviceSize is measured by diagonal of screenCommon sizes: 15, 17, 19, 21 inches Clarity is indicated by resolutionMeasured in pixelsMore pixe

13、ls = better claritycomputing ESSENTIALS 19第19頁第19頁Monitor Standards（監(jiān)視器規(guī)格）Resolution capabilities indicated by a monitors standardSuper Video Graphics Array (SVGA)Extended Graphics Array (XGA)Super Extended Graphics Array (SXGA)Ultra Extended Graphics Array (UXGA)computing ESSENTIALS 20第20頁第20頁Monit

14、or Types（監(jiān)視器類型）Cathode-Ray Tubes (CRT)Most commonFlat-panel monitorsPassive-matrixActive-matrixeBook readersData projectorsHigh-definition television (HDTV) computing ESSENTIALS 21第21頁第21頁P(yáng)rinters（打印機(jī)）Produces hard copy outputInk-jet printerSprays droplets of inkLaser printerLaser produced imagesThe

15、rmal printerHeated element produce image on heat sensitive papercomputing ESSENTIALS 22第22頁第22頁Other Printers（其它打印機(jī)）Dot-matrixSeries of pins on print headInexpensive, not high qualityPhoto printerPrint photo-quality images from digital camerasPlotterMaps, architectural drawingsHigh quality, larger s

16、ized outputcomputing ESSENTIALS 23第23頁第23頁Audio Output Devices（音頻輸出設(shè)備）Translate computer data into understandable soundsMP3 filesComponentsSound cardSpeaker system or headphonescomputing ESSENTIALS 24第24頁第24頁Combination Input/Output Devices（輸入輸出聯(lián)合設(shè)備）Devices are combined into one deviceSave roomSpeci

17、alized applicationsFax machineMultifunctional deviceTelephonyTerminalscomputing ESSENTIALS 25第25頁第25頁Fax Machine（傳真機(jī)）Facsimile transmission machineSends and receives images across telephone linesFax/modem boardGive computer same capabilitycomputing ESSENTIALS 26第26頁第26頁Multifunctional Device（多功效設(shè)備）C

18、ombinesScannerPrinterFax machineCopying machineCost effectiveSaves spacePopular in small offices or homecomputing ESSENTIALS 27第27頁第27頁Telephony（電話）Uses Internet rather than traditional communication linesRequiresInternet telephoneInternetSpecial service providercomputing ESSENTIALS 28第28頁第28頁Terminals（終端設(shè)備）Devices connected to serversInput and outputTypesDumb terminalI