语音录放芯片ISD4004完整的C代码源程序－C51编写，该程序在驾驶员考试系统车载考试设备中长期稳定使用，灵活方便，效果良好-Voice Recorder ISD4004 chip complete C source code-C51 prepared by the procedures in the examination system driver-vehicle test equipment and long-term stability in use, flexibility, goo

其片内设有时钟振荡器、128K字节EZPROM(电可编程可擦除只读存贮器)、低噪前置放大器、自动增益控制电路、反混叠滤波器、平滑滤波器、模拟转发器、差动功率放大器等高品质语音录放系统所需的全部基本功能电路。-There are chip clock oscillator, 128K bytes EZPROM (electrical erasable programmable read-only memory), low-noise pre-amplifier, AGC circuit, anti