Electronics > Beginners
Why binary is represented by two bits 0 and 1 and not three bits?
paulca:
Is the OP sorry he asked yet?
tooki:
--- Quote from: TheUnnamedNewbie on October 30, 2019, 10:42:14 am ---
--- Quote from: tooki on October 29, 2019, 04:53:06 pm ---Indeed, a substantial percentage of the digital signaling we use does not rely on encoding a 1 as a high voltage and 0 as a low one. Manchester encoding/NRZ for example is very common.
--- End quote ---
I think Manchester/NRZ was not what we were pointing to, it still uses only two levels. Rather things like PAM4/6/8, BPOOK, multi-level ASK/FSK etc...
--- End quote ---
I know. My thought process was actually regarding the baud ≠ bitrate issue. So many people think digital simply means "voltage on = logic 1, voltage off = logic 0", yet that's really not true much of the time, even in systems using only 2 voltage levels. Phase shift keying is another (perhaps better) 2-level example of the disconnect between voltage level and the logical bits being sent.
Vtile:
--- Quote from: paulca on October 30, 2019, 07:40:27 pm ---Is the OP sorry he asked yet?
--- End quote ---
Don't be the party pooper. >:D
SL4P:
Two states is all an EE can understand.
BEER or NO BEER
PIZZA or NO PIZZA
and so on.
Imagine if you threw in BEER, CIDER or NO BEER... what happens if you wanted WINE ?
Vtile:
You select "No beer" and go next step of sequence!!
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