基于AVR系列ATMEGA16单片机设计的计算器小程序。包含多个芯片驱动程序。-AVR Series Single-chip-based design ATMEGA16 Calculator applet. Contains a number of chip drivers.

键盘扫描程序，可以通过4*4键盘扫描。一般在做单片机设计时可以用到，这是一个4*4简易计算器的程序-Keyboard scanner, you can scan through the 4* 4 keyboard. Generally can be used when doing single-chip design. This is a 4* 4 Simple calculator program