Hi,
Using the software CircuitMaker, I need 2 simple circuits designed to simulate:
a) the 4-bit register with tri-state outputs 74LS173 ([login to view URL])
and
b) the 4-bit ALU 74LS181.
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Please use logic switches to input data and logic displays to show outputs. You should also use 4-bit data items and pathways. Also include labels so that I can fully understand how the circuit works, and so that I can investigate and study it further.