在Linux中使用Qt界面设计简易计算器，并在上位机上触屏实现-Design simple calculator using Qt interface in Linux, and touch on the host computer to achieve

手机游戏开发高级用户界面设计实现一个简单的计算器功能，加减法运算-Mobile games development of advanced user interface design and implement a simple calculator function, addition and subtraction operations

基于嵌入试的语音计算器设计，带有GTK界面，实现加减乘除运算和语音播报。-Based on the embedded test voice calculator design, with GTK interface, to achieve addition and subtraction multiplication and division operations and voice broadcast.