sequential (39) Tri State buffer

https://wodewangzhishime.blogspot.com/2022/02/bach-request-poison-gas-from.html

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Ref: https://wodewangzhishime.blogspot.com/2022/03/httpswodewangzhishime_13.html.

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John : See the Picture above.  Each output bit has a tristate buffer.  In another words,  the parallel output must be enabled.  I give you an example. 

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Int register_a = 1010

Int register_b = register_a.

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John : In this case, the parallel output of register_a is enabled.

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Me: Ok.

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John: The parallel output of register_b is disable cause register_b is being set bt the others only. register_b is not gonna set the others.

Me: It's the concept of "fields".

John : In code, we represent them by this way.

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Subject [Ststem]

Object [register_a]

Output available [true] 

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Subject [System]

Object [register_b]

Output available [false] 

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John : The system disable the output from register_b.