对系统音量进行控制的一个小软件，比系统的图标大一些，能对系统音量进行及时控制。-The volume control on the system, a small software system icon than larger, the system can control the volume timely.

XP系统 矩阵键盘音量调节 通过83627寄存器配置适合初学者学习-XP system matrix keyboard sound volume through the 83627 registers configuration for beginners to learn

attiny2313 asm code for ti pga4311 volume control ic. uses rc5 or rotary encoder input.