EELE 261 Pre-Lab 4 Problem 1. Fill in the 4-bit Truth Table for alarm A accordin

Question

EELE 261 Pre-Lab 4 Problem 1. Fill in the 4-bit Truth Table for alarm A according to the problem narrative: Alarm A sounds when an unphysical input state is detected Problem 2. Write the IIM equation for A. Problem 3. Design the alarm controller circuit using 74138 ICs. Sketch your circuit in Multisim and provide a printout of your schematic. Use clear and concise labeling in your schematic. Problem 4. Run a simulation of your alarm controller circuit in Multisim. Verify its correct operation by using the virtual logic analyzer to reproduce the Truth 10 Table for A in a timing diagram. Use the bit ordering indicated in this Truth Table and the V'O table given in the data sheet. Provide a printout of your timing diagram (do not use a black background). Label your printout to make it clear what your grader is looking at. 0o 0 0

Explanation / Answer

Unphysical input generally indicates the dont care (it is neither 1 nor 0) condition. In the truth table no dont care condition appeared. So never the alarm will ring. Please mention clearly U,L stands for what. If there is some other significanne of unphysical input then mention that. Then only this question can be answerable.

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