# Problem set 5 for CSCI 255 -- Spring 2000

- Due: Monday, 28 February, 3:15 pm

## Problem 1. (2 points)

Simplify the following function with Karnaugh maps

- F(x, y, z, w) = w'x' + w'xy + wx + wx'y' + x'y

## Problem 2. (2 points)

Simplify the following function, with don't care conditions, with Karnaugh
maps

- F(A, B, C, D) = Σ(0, 1, 3, 7, 11, 12)
- F(A, B, C, D) = d(2, 5)

## Problem 3. (2 points)

Simplify the following function, with don't care conditions, with Karnaugh
maps

- F(A, B, C) = Σ(0, 2, 4, 6, 7)
- F(A, B, C) = d(5)

## Problem 4. (4 points)

Write the truth table for the top and bottom segments of the hex (4-input)
7-segment display. Encode that information for `espresso`. Now run
`espresso` and decode its output into a sum-of-products expression
of circuit needed to compute these outputs.

You may do this part of the assignment with a team of three people.

Return to the CSCI 255 index

Return to the UNCA Computer Science home page