閱讀下面短文，在空白處填入適當內容（不多于3個單詞）或括號內單詞的正確形式。

Do you know anything about the1.(invent) of the bar code (條形碼) ?2.small food store owner found it was difficult to keep records of the product information. In 1948, he asked the Drexel Institute（研究所） of Technology 3.(solve) this problem. Bernard Silver, a graduate student, was 4. ( interest) in this technology. He and his friend Norman Joseph Woodland started to work on it. Soon , they invented 5. (they) first working system(系統(tǒng)).

The system did work 6.first, but it was very expensive and sometimes the system didn't work well. If it was to become popular in stores, the problems had to be solved.7.(final), Woodland solved them.

The patent(專利權) for the bar code system was asked for by Silver and Woodland in 1949, but the patent was not given8.1952. Although this patent was9.( give), the system was still not popular among store owners.

In 1970, a business named Logicon Inc. invented the Universal Grocery Products Identification Code (食品工業(yè)統(tǒng)碼). Marsh Supermarket in Troy was the first store to set up this bar code reading system. It has become very popular ever since, and now it's used in all10.( type) of stores all over the world.

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