This paper introduces a voice recorder based on single-chip microcomputer AT89S52 and voice chip ISD25120, which can realize the functions of real-time acquisition, segmented storage and segmented playback of voice signals. Human-computer dialogue is realized through buttons and LCD 1602, and the function (recording or playback), channel (storage or playback location) and volume are selected and controlled. This voice recorder can be used in devices such as bus voice announcement system or bank number announcement system.
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