In further embodiments, the card may include active circuit elements for switching, powering or processing signals, and {HEAD ~ passive circuit elements} for {TAIL ~ filtering}, matching or damping signals, so that few or no connections to outside circuitry are required 
for
In further embodiments , the card may include active circuit elements for switching , powering or processing signals , and { HEAD ~ passive circuit elements } for { TAIL ~ filtering } , matching or damping signals , so that few or no connections to outside circuitry are required
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