DSA0075151.pdf by Information Storage Devices

Partial File Text DESIGNING THE ISD33000 SERIES INTO DIGITAL CELLULAR PHONES by: Prasanna Shah President an... more
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"GSM baseband" 74HC4053 block diagram of audio section in digital form IS-136 IS-54 ISD recorder ISD33000 Message Management ISD33000 schematic diagram of voice recorder TDA7050T telephone handset circuit schematic diagram VOICE RECORDED playback system VOICE RECORDER voice recorder and playback voice recorder and playback circuit voice recorder chip VOICE RECORDER playback system voice recording chip