# What are the hex and binary data conventions?

FollowThe data follow the **little endian** convention. This means that to convert HEX to decimal you need to put the lowest significant byte before the most significant byte and the convert. For example: FD0C->0CFD->3325 (*0.1deg) ->332.5 degrees.

Go to http://en.wikipedia.org/wiki/Endianness for more information.

All values which have a sign (+ve or -ve) use **Two's complement** convention. In this case follow these steps:

1) Convert to binary (remember little endian)

2) If the first bit is 0 convert to decimal

3) If the first bit is 1. Invert all the numbers (0=1 and 1=0), add one and convert to decimal and change the sign to minus.

For example:

F1FF>FFF1>1111111111110001>0000000000001110+1>0000000000001111>-15 (*0.1 degrees) > -1.5 degrees

Go to http://en.wikipedia.org/wiki/Two's_complement for more information.

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