自动出题100以内的加减法混合运算，给那些要给孩子出题的家长提供方便，快捷键为Ctrl+L-Auto title addition and subtraction within 100 mixed operations, to those who give the child a question for the convenience of parents, the shortcut is Ctrl+ L

ATTINY15 单片机D类功放电路及源码 Last change: TF 8 Sep 99 8:18 pm *************************************************************************** * A P P L I C A T I O N N O T E F O R T H E A V R F A M I L Y * * Number : AVR000 * File Name : T15def