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Logical Time
I
0
O
0
I
1
I
2
I
3
I
4
O
1
O
2
O
3
O
4
Period of cycle
Synchronous Time Model
• Time as a logical notion: it is a sequence of graduations (sequence index)
• I
n
and O
n
a stream of inputs and outputs at the index n of their sequence (step n)
• In theory, execution time is null…
10
