電子與通信技術(shù)專業(yè)英語(yǔ)Unit 4 lesson 23

1、PART1 Barcodes are a combination of dark and light lines of variable widths. The dark lines are most commonly termed as bars and the light bands as spaces. The elements (bars and spaces ) of these barcodes must be consistent, proportional thickness and thinness. What this means is that if the widest

2、 elements of the barcode can be as thick as a pencil or as thin as a credit card, the corresponding thin bars and spaces in the bar code remain proportionally thin. Barcodes are the easiest and the cheapest way of automatic data collection. Instead of an operator reading and punching the product cod

3、es by a keyboard at a retail counter, reading a barcode reads the data as well as enters the data into the host system. A Bar Code cannot be read by a human eye. Therefore, it is advisable to print the data encoded in a barcode close to the barcode. So the operator can read the data and enter it man

4、ually just in case the scanner stops functioning. Lesson 23 Two-dimensional Bar CodeTextNew wordNotesExercisesTranslationVocabulary PART1Lesson 23 Two-dimensional Bar Code Two-dimensional scanners were far more expensive than 1D scanners when were introduced. Recent microprocessor developments have

5、brought the cost of 2D scanners down to about 125% of the cost of a comparable 1D scanner. Also, advancing decoding algorithms have made scanning quicker and easier and provided even greater readability of excessively-damaged symbols. There are a number of two-dimensional symbologies in growing use

6、today. They fall into two categories: matrix and stacked. Two-dimensional bar code symbologies represent one of the biggest advances in the market of Automated Data Collection in the past few years. With advancements in technology, with smaller and faster processors, it can only get better. However,

7、 when analyzing any potential data collection system, the advantages must be weighed over the added costs. 2D bar code technology should be thought of as one that is complementary to the traditional 1D scanning technology, not its replacement.TextNew wordNotesExercisesTranslationVocabulary PART1Less

8、on 20 Computer SimulationTextNew wordNotesExercisesTranslationVocabulary Some example applications for 2D technology: Packing List - Trading partners agree on a standard methodology for encoding shipping information in a 2D symbol, attached to a shipped order. Order data (PO number, shipping date, p

9、roduct codes, quantities, etc.) can automatically be entered into the receivers receiving computer terminal in a couple of seconds. Drivers Licence - The drivers name, address, licence number, expiry date and driving restriction codes are encoded in a 2D symbol that is printed on the operators licen

10、ce. Police officers, car rental agencies, hotels can easily enter in information regarding the licence holder, with the possibility of adding any mis-keyed data. Patient Record - On a hospital patients chart record is a 2D symbol, encoding their name, health care number, doctors name, date of admiss

11、ion, allergies, etc. When direct care is given to the patient, the caregiver or doctor records the action byPART1Lesson 23 Two-dimensional Bar CodeTextNew wordNotesExercisesTranslationVocabulary scanning the bar code. Also, the bar code is scanned when medication is administered and the possibility

12、of giving a patient the wrong medicine is virtually eliminated.Fig.23-1 2D Bar CodesPART2New words and phrases:barcode brkod n. 條形碼，條碼技術(shù)automatic tmtik adj. 自動(dòng)的，無(wú)意識(shí)的，必然的 n. 自動(dòng)機(jī)械，自動(dòng)手槍 symbology simb ldi n. 碼制；符號(hào)學(xué)，符號(hào)使用；象征學(xué)two-dimensional ,tu:dimennl adj. 二維的 category ktig()ri n. 類別，分類scan skn n. & v.

13、掃描；瀏覽；審視 TextNew wordNotesExercisesTranslationVocabulary PART2Phrases and ExpressionsPO number (purchase order number) 訂單號(hào)computer terminal 計(jì)算機(jī)終端New words and phrases:TextNew wordNotesExercisesTranslationVocabulary PART3Notes:1.The dark lines are most commonly termed as bars and the light bands as s

14、paces. 譯文：黑線條通常稱為條，而白線條被稱為空。2.The elements (bars and spaces) of these barcodes must be consistent, proportional thickness and thinness.譯文：構(gòu)成條形碼的元素（條和空）必須連貫且寬度成比例。3.So the operator can read the data and enter it manually just in case the scanner stops functioning. 譯文：這樣操作者可以讀取數(shù)據(jù)或手動(dòng)輸入，以防掃描儀停止運(yùn)作。in cas

15、e: 以防，以免，如：Write the telephone number down in case you forget.TextNew wordNotesExercisesTranslationVocabulary PART34.Two-dimensional scanners were far more expensive than 1D scanners when were introduced. Recent microprocessor developments have brought the cost of 2D scanners down to about 125% of t

16、he cost of a comparable 1D scanner.譯文：購(gòu)買(mǎi)一臺(tái)二維掃描儀遠(yuǎn)比一維掃描儀更昂貴。目前微處理器的發(fā)展已使得二維掃描儀的成本下降至一個(gè)同類一維掃描儀成本的125%。far: 非常，（作比較時(shí)用于強(qiáng)調(diào)）得多，如：(1)This English poem is far too hard to translate. (2)There are far more opportunities for young people than there used to be.5.2D bar code technology should be thought of as one

17、that is complementary to the traditional 1D scanning technology, not its replacement.譯文：二維條碼技術(shù)應(yīng)該被看做是傳統(tǒng)一維掃描技術(shù)的補(bǔ)充，而不是代替品。Notes:TextNew wordNotesExercisesTranslationVocabulary PART4Exercises:1. Write T (True) or F (false) beside the following statements about the text.a. The elements (bars and spaces)

18、of these barcodes must be consistent, proportional thickness and thinness. b. A human can read a Bar Code with their eyes. c. With a Bar Code, the operator wont have to enter the data manually. d. Two-dimensional scanners were much cheaper than 1D scanners when were introduced. e. 1D scanning techno

19、logy should be replaced by 2D bar code technology. f. A 2D symbol that is printed on the drivers licence contains the information about the licence holders, such as the name and address. g. When direct care is given to the patient, the caregiver or doctor records the action by scanning the bar code.

20、 TextNew wordNotesExercisesTranslationVocabulary PART4Exercises:2. Fill in the missing words according to the text.a. Barcodes are the and the way of automatic data collection.b. Two-dimensional symbologies fall into two categories: and .c. However, when any potential data collection system, the adv

21、antages of using two-dimensional barcodes must be the added costs.d. Order data ( , shipping date, product codes, quantities, etc.) can be entered into the receivers receiving in a couple of seconds.e. On a hospital patients chart record is a , their name, health care number, doctors name, date of a

22、dmission, allergies, etc.3. Translate the following paragraph into Chinese.A Bar Code cannot be read by a human eye. Therefore it is advisable to print the data encoded in a barcode close to the barcode generally known as human readable. So the operator can read the data and enter it manually just in case the scanner stops functioning.TextNew wordNotesExercisesTranslationVocabulary PART5Translation第23課 二維條形碼 條形碼是將寬度不同的黑白線條結(jié)合起來(lái)的一種碼。黑線條通常稱為條，而白線條被稱為空。這些條形碼的元素（條和空）必須連貫且寬度成比例。這意味著，如果條形碼最寬的條紋和鉛筆或信用卡一樣厚，那么最窄的條紋必須與之成比例。 條形碼是自動(dòng)數(shù)據(jù)采集的最簡(jiǎn)單和最便宜的方式。操作者無(wú)需在零售柜臺(tái)用鍵盤(pán)輸入產(chǎn)品代碼，通過(guò)讀取條形碼就能讀取產(chǎn)品數(shù)據(jù)，同時(shí)也將數(shù)據(jù)輸入到