基于PIC单片机的智能语音记事器的设计

Design of Intelligent Voice Memo Device Based on PIC Microcomputer

介绍了一种基于单片机的智能语音记事器的设计方法。控制器采用PIC单片机,语音录放电路由ISD1420及相应元器件构成。系统具有能够随时对当前时间/日期进行调整;能够随时输入记事时间和重录音;能够定时发出语音提醒信号和蜂鸣器提示信号;录音状态下具有密码输入和验证的功能,能够随时修改和储存密码,并且具有掉电保护和超时自动退出等功能。

This thesis introduces a design method for intelligent voice memo device based on microcomput-er.PIC microcontrollers are applied in controllers and audio processing circuit is composed of ISD1420 and rele-vant components.The system can make time and date adjustment,input recording time and re-record at any time and has power-down protection.Moreover it can give out from time to time reminding signals and beeper signals and enjoys the functions of password input and verification during recording,during which the passwords can be modified and saved at any time.It also has brown-out protection and automatic time-out functions and so on.