Learning English With an Electric Dictionary

Published:2010/7/11 21:10:00 Author:Li xiao na From:SeekIC

English is widely used around the world. It is not very difficult to learn, but the vocabulary of English is very large which contains more than hundreds of thousands of words. And it will be larger as time goes on. The commonly used words can reach four thousand to five thousand, while people who have had high education know more than ten thousand words. Even a native person can not remember such large vocabulary. Therefore, an electric dictionary is necessary for all the English speaker and English learner.

Unlike the oxford dictionary, electric dictionary is with small size and easy to be handled. When you are on the bus, the electric dictionary can be put in your pocket and take out to look for the words. This device not only can tell you how to spell the words, it also can give you the right pronunciation. Whether the British English or American English you want, this device can make you satisfied. So, when you are going to give a speech to so many people, you had better check the pronunciation of some complicated word to avoid making mistake.

This kind of device is flexible to use, for it has so many functions for you to choose. It provides some usage of the word, grammar and syntax; even you can learn the words by playing games on this device. Synonyms and antonym can also be easily found. After the introduction of the utilization and function of the electric dictionary, let us get to know some of its working principles.

The speech information is stored in the memory, which is in the digital signal form and can not be returned to the sound after the processing of central processing unit. In the circuit, the digital speech is firstly converted to simulation speech, and then the power amplifier enlarges the signal, driving the loudspeaker to be the sound. The circuit that converts the digital speech to the simulation speech is called digital-analog converter. The memory chips in the electric dictionary can be divided into three different kinds, namely masked read only memory, flash and static random access memory.

The functions of the three memory chips are different from each other. The masked read only memory stores the information which does not need revision, while the information needs revision is stored in the flash. The information which is rarely used is stored in the static random access memory. The related integrated circuit of this device is OTD10D6CW.

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