CSO1 Midterm Review

CSO1 Midterm Review

Which bitwise expression is logically equivalent to (x & y) | (x & ~y)?

1: Which bitwise expression is logically equivalent to (x & y) | (x & ~y)?

x

y

x ^ y

~x & y

If 1100101001101101 is a 16-bit floating point number with a 5-bit exponent value, what is the exponent is base-10?

2: If 1100101001101101 is a 16-bit floating point number with a 5-bit exponent value, what is the exponent is base-10?

1

-13

15

3

How many carry bits occur during the binary ripple addition of 0xE7 + 0x9C?

3: How many carry bits occur during the binary ripple addition of 0xE7 + 0x9C?

2

6

5

3

The D flip-flop has inputs D and clock and output Q. If D toggles rapidly while the clock is HIGH, what happens to Q

4: The D flip-flop has inputs D and clock and output Q. If D toggles rapidly while the clock is HIGH, what happens to Q

Q follows D

Q changes unpredictably

Q does not change

Q changes when clock is LOW

How do you know a number is odd?

5: How do you know a number is odd?

The number of even bits that are 1 is even

The low order bit is 1

The low order bit is 0

The number of even bits that are 1 is odd

How many 2-input AND gates can make a 4-input AND gate?

6: How many 2-input AND gates can make a 4-input AND gate?

3

1

2

4

What is in register 1 after the following (Assume registers initialize at 0): 0x64 0x04 0x71 0x80 0x64 0x67 0x80

7: What is in register 1 after the following (Assume registers initialize at 0): 0x64 0x04 0x71 0x80 0x64 0x67 0x80

0x67

0x00

0x04

0x64

What happens if you feed 1 into A1, but 0 into A3 in a register file?

8: What happens if you feed 1 into A1, but 0 into A3 in a register file?

The register file throws an error

You write to register 1 and read from register 0

You write to register 1 and read from register 3

The register file writes register 1 to memory