英语词汇“subscriber identity module (SIM)”的翻译、意思、用法、释义-英汉经管词典

单词	subscriber identity module (SIM)
释义	subscriber identity module (SIM) Definition Small printed circuit board which must be inserted in a GSM phone to sign-on as a legitimate subscriber and to make and receive calls. SIM holds a microprocessor that stores subscriber information (identification number, phone numbers, and personal preferences) and encrypts-decrypts voice signals making it virtually impossible to eavesdrop on somebody else's call.
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