Could someone explain the solution picture 1 with the 'OR'. The solution is on picture 2 but I want an explanation on why the wiring for goes before the operation and not after it.  Question: What's the problem here? What would happen if we try 'OR'? How do we fix it.

EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN:9781337516549
Author:Simmons
Publisher:Simmons
Chapter32: Standby Power Systems
Section: Chapter Questions
Problem 7R: Briefly explain the function of a transfer switch. _____
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Could someone explain the solution picture 1 with the 'OR'. The solution is on picture 2 but I want an explanation on why the wiring for goes before the operation and not after it. 

Question: What's the problem here? What would happen if we try 'OR'? How do we fix it.

Let's use the 1st control signal from the main operation muliplexer.
00 is AND, 01 is OR, 10 is ADD, & 11 is SUB
What's the problem here? What would happen
if we try to 'OR'? How do we fix it!
Operation
Carry in wire
Result
23
Carry Out
Transcribed Image Text:Let's use the 1st control signal from the main operation muliplexer. 00 is AND, 01 is OR, 10 is ADD, & 11 is SUB What's the problem here? What would happen if we try to 'OR'? How do we fix it! Operation Carry in wire Result 23 Carry Out
Let's use the 1st control signal from the main operation muliplexer.
00 is AND, 01 is OR, 10 is ADD, & 11 is SUB
Operation
2
Carry in wire
Result
3
24
Carry Out
Transcribed Image Text:Let's use the 1st control signal from the main operation muliplexer. 00 is AND, 01 is OR, 10 is ADD, & 11 is SUB Operation 2 Carry in wire Result 3 24 Carry Out
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