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Recording Sound With Discrete Logic
Posted July 14, 2014 by Chris
"The device records audio captured by a microphone at a sample rate of 8000Hz, it is stored into 8bit volatile SRAM, and then replayed out of a speaker, it is controlled via CMOS 4000 logic.
It takes up 4 full breadboards, and requires -5, 0, 5 and 12v supplies. All chips are DIL."
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