1, LSB means: full name of least significant bit, which means least significant bit in binary number. Generally speaking, the MSB is located at the far left of the binary number, and the LSB is located at the far right of the binary number.

2.MSB means: most significant bit, which belongs to most significant bit in binary number. MSB is the most weighted bit, similar to the leftmost bit in decimal number.

: 1 and LSB are the de facto standards in the field of LINUX standardization, which establish the binary interface between the application and the running environment. LSB is a set of core standards, which ensures a good combination between LINUX distribution and Linux applications.

2.LSB project was originally initiated in1May, 1998, and its project launch statement was supported by Linus Torvalds, Bruce Perens, Eric Raymond and others. At that time, the goal was to establish a series of standards that should be followed in building Linux distribution and provide a reference platform. In May 2000, LSB became a working group of Free Standards Group (FSG).