Newsgroups: sci.electronics
Path: cantaloupe.srv.cs.cmu.edu!rochester!udel!wupost!howland.reston.ans.net!newsserver.jvnc.net!newsserver.technet.sg!ntuix!ntuvax.ntu.ac.sg!ba1926108
From: ba1926108@ntuvax.ntu.ac.sg (AaronAw)
Subject: Card Phones
Message-ID: <1993Apr27.175220.1@ntuvax.ntu.ac.sg>
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Organization: Nanyang Technological University - Singapore
Date: Tue, 27 Apr 1993 09:52:20 GMT

Can you help me to understand how a CardPhone operates and 
how the values are stored on the phonecard..

Thanx

