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Q:Design a simple circuit based on combinational logic to double the
output frequency.
A:
______________
____ ____ ____ | | _ _ _ _
| | | | | | | | | | | | | | | |
_| |____| |____| |__ | | _| |_| |_| |_| |_
| |
------------------------------>| |-------------------->
| |
|______________|
|\ |\
| \ | \
____| \o_________| \o______
| | / | / |
| | / | / |
| |/ not |/ not |
| |
| | \\----.
| +----\\ \
| || )--------+
---+----------------------------------// /
//----'
XOR
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