一个简单的键盘练习程序，可以使用键盘上26个英文字母的程序，适合初学者学习如何控制所有键盘上的案件。-A simple keyboard exercise program, you can use the 26 letters on the keyboard program, suitable for beginners to learn how to control all of the keyboard case.

新手资料 如何正确使用电烙铁 焊接技术是一项无线电爱好者必须掌握的基本技术，需要多多练习才能熟练掌握。-Information on the proper use of novice soldering iron is a radio amateur welding must master the basic skills need more practice to master.