创建前面板，该前面板有8个led指示器和一个8位无符号整数的垂直滑动条控件。显示滑动条带有数字指示器，确保led均匀分布并且排列在底部。要求实现8个led的亮灭状态与滑动条中数字的二进制相对应。（十进制与二进制转换）-Create a front panel, the front panel having 8 LED indicator and a 8 bit unsigned integer vertical sliding strip controls.Display the slider with digital indicator, ensure the homogeneous distribution of LED and arranged at the bottom.Demands of the 8 LED on-off state and the sliding strip digital binary corresponding.(decimal and binary conversion)