AVR单片机是Atmel公司1997年推出的RISC单片机。RISC（精简指令系统计算机）是相对于CISC（复杂指令系统计算机）而言的-Atmel Corporation AVR Singlechip was launched in 1997 single-chip RISC. RISC (Reduced Instruction Set Computer) is compared with the CISC (complex instruction set computer) in terms

AVR 的指令集，编系统是有用，大家可以有选择的学习-AVR instruction set, code system is useful, we can have a choice of learning