Recent content by hallerman

Homework Statement Draw the logic diagram for the following Boolean expression. The diagram should correspond exactly to the equation. Assume the complements of the inputs are not available. B(A'C'+AC) + D'(A+B'C) Homework Equations The Attempt at a Solution I can't find any...

Btw, I got Y = A'B'C + B'CD + A'BD + BC'D for the four-bit prime number checker. I'm wondering if there's any way to further simplify this expression. I haven't found any way, hence my question.

I think I agree with you. :smile:

I asked her the same question during the exam, and she replied that I have to figure that out by myself. I answered true out of a pre-emptive notion that that bright lines implicitly refer to an emission spectrum. The lady marked my answer wrong, and explained that the answer should be false...

This lady who takes our class, she set this question in one of our papers: 'The wavelengths of the dark lines are exactly the same as those of bright lines in the absorption spectrum.' - True or false? I answered true. Have I been wrong?

I've talked with the teacher. The backup has no utility in this problem. I did the problem by two different methods: 1. Output = XY + YZ + ZX + Z = XY + Z 2. I formed the truth table for X, Y, Z & Output, and then, I did a k map and got the same answer. Are both methods equally valid?

I have done the k map. I'm only hoping that you might check if the answer's correct, as I might have made a mistake in my solution. Please!

Thanks, I got it.

Homework Statement 1. A nuclear power plant contains three danger sensors X, Y and Z that can shut down the plant. Sensor Z is in such a senstive location that it has a backup B. The plant is to be shut down if two of the three sensors indicate danger. However, with exception, sensor Z is...

Homework Statement Prove the following expression using Boolean algebra: 1. X'Y' + Y'Z + XZ + XY + Z'Y = X'Y' + XZ + YZ' Homework Equations Laws of Boolean algebra The Attempt at a Solution I tried to take Y common but failed. I did the same with X and Z, but the method did...