Quiz #2

8 March, 1994

This is an open books, open notes exam to be turned in by 8:30 PM. No calculators may be used during this quiz!

Problem 1. (15 points)

On the back of this page, draw a very abstract block diagram for a 3x8 decoder with an enable input. Don't show any gates. Only show the input and output wires.

Problem 2. (25 points)

On the back of this page, show how you construct a 16-to-1 multiplexer out of five 4-to-1 multiplexers.

Problem 3. (12 points)

How many address lines and data lines are needed for a 16Kx32 memory?

Problem 4. (12 points)

Convert the decimal number 201 into a binary number.

Problem 5. (12 points)

Convert the binary number 10110111001 into a decimal number.

Problem 6. (12 points)

Convert -105 in a 10 bit two's complement binary number.

Problem 7. (12 points)

Convert the decimal number 91.25 into a binary number with a binary point.