Photo-coupled PNPN crosspoint IC switch for electronic key telephone system /

相似书籍

• General requirements for apparatus for connection to public switched telephone networks run by certain public telecommunications operators
  由: 8096 British Standards Institution
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  由: 8096 British Standards Institution
• Basic electronic switching for telephone systems /
  由: Talley, David
  出版: (1982)
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  由: 8096 British Standards Institution
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  由: 8096 British Standards Institution