Use of the small-sized electronic circuit card with the various interfaces in the electronic system

摘要

It needs that the correct security cord/code is input from the small-sized memory card which the automobile radio, as for electronic system portable and such as other calculation devices, and all the terrestrial determination system receiving devices, often, the said system completely or before making partly operation possible, or before the fixed data can be pulled out, removes to the card slot of the said system and possibly is inserted. Possible with the said security cord/code in connection with the function which makes operation the memory card of the same type also in order to accumulate the digital data which is utilized by the said system it is used, it removes that kind of data card, to the same card slot and as the card which includes the said security cord/code possibly is inserted. Or, both of the utilization data and the security cord/code are included in the single card. Example of one application is the automobile radio, in that case the data which is supplied by the said 2nd card is the data of the music which is played back through the audio system of the said radio.