question 1: in nrzi, flip said 1 or keep said 1

Claim 1: actually NRZI code is very simple, namely the turn signal level 0, signal level constant said 1,
Idea 2: called is not zero in reverse (Non? Return to Zero Inverted, NRZI), the sender of the current signal jump code is 1, keep the current signal encoding is 0,


Problem two: in Manchester coding, is from high to low said 0 or from low to high 0

Claim 1: in the middle, the signal from high to low jump said data 0, signal data from low to high jump said 1,
Idea 2: attention, Manchester code will be 0 as the jump from low to high, 1 as the jump from high to low

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