一款廉价的多按键多数码管输出IC，通过SPI接口与单片机连接通讯，可大量节省单片机的输出输入接口，并节省系统处理时间，此包包括原理图与源代码，是低成本电器的较好选择,A low-cost multi-button multi-output digital control IC, through the SPI interface to connect with the single-chip communications, can save a lot of single-chip input

tm1636驱动，TM1635 是一种带键盘扫描接口的LED（发光二极管显示器）驱动控制专用电路，内部集成有MCU 数字接口、数据锁存器、LED 高压驱动、键盘扫描等电路。-tm1636 driver

LED Drivers for all micro controllers. Easily converted to any programming language