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Question
part 3: information flow
you design a program that produces a random...
task a: write pseudocode using a loop that...
task b: how would you change the loop if the number of characters was...
part 4: logic gate puzzle
look at this logic circuit: (a and b) or c
task a: fill in the truth table.
create a real-world analogy for this circuit.
(truth table with columns a, b, c, (a and b), output ((a and b) or c) and rows with 0/1 values)
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To fill the truth table for \((A \text{ AND } B) \text{ OR } C\), we use the definitions of AND (outputs 1 only when both inputs are 1) and OR (outputs 1 when at least one input is 1):
| A | B | C | (A AND B) | Output ((A AND B) OR C) |
|---|---|---|---|---|
| 0 | 0 | 1 | 0 | 1 |
| 0 | 1 | 0 | 0 | 0 |
| 0 | 1 | 1 | 0 | 1 |
| 1 | 0 | 0 | 0 | 0 |
| 1 | 0 | 1 | 0 | 1 |
| 1 | 1 | 0 | 1 | 1 |
| 1 | 1 | 1 | 1 | 1 |
For the real - world analogy: Consider a security system for a room. Let \(A\) represent “Person 1 has the key to the room”, \(B\) represent “Person 2 has the key to the room”, and \(C\) represent “The backup access card is used”. The condition \((A \text{ AND } B) \text{ OR } C\) can be thought of as the room being accessible if both Person 1 and Person 2 use their keys together ( \(A\) AND \(B\)) or if the backup access card is used (\(C\)). So, if either both key - holders use their keys or the backup card is used, the room can be accessed.