protel 红外线 发送音频信号 接受音频信号-protel infrared audio signals to send audio signals received

TA S3C2410底板 内含LCD、EXT、Audio、Uart、Ethernet、JTAG、USB和GPRS protel DXP原理图，带封装库-TA S3C2410 floor contains LCD, EXT, Audio, Uart, Ethernet, JTAG, USB, and GPRS protel DXP schematic diagram, with package library

超外差收音机，高频振荡器，调制电路，选频功率放大，音频放大，音频振荡-Superheterodyne radio frequency oscillator, frequency modulation circuit, power amplifier, audio amplifier, audio oscillation