CS319 Practices - Two's Complement Arithmetic

Two's Complement Arithmetic

This section includes exercises on 2's complement arithmetic: negation, addition, and subtraction. Multiplication and division exercises are not included yet.

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Follow steps 1-2-3-4, but you may use the "Start" button of an exercise at any time to restart.
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Exercise 1. 8-bit 2's Complement: Negation

Negate a 2's complement number: given a number n in 2's complement, please provide (-n)'s 2's complement representation in the same number of bits.

Reference: a lecture on 2's complemet negation.

1. Generate a random 8-bit 2's Complement number:
2. Please negate this 2's complement number and indicate whether overflow happened:	-	(Enter result here) Overflow? Yes No
3. Now check your answer:		-
4. Show the solution:		-

Exercise 2. 8-bit 2's Complement: Addition

Reference: lecture on 2's complement addition.

1. Generate two random numbers in 8-bit 2's Complement:		+
2. Please add them together and specify any carry/overflow:	-	(Enter result here. Should be 8 bits) Carry out of MSB? Yes No Overflow? Yes No
3. Now check your answer:		-
4. Show the solution:		-

Exercise 3. 8-bit 2's Complement: Subtraction

Reference: lecture on 2's complement subtraction.

1. Generate two random numbers in 8-bit 2's Complement:		-
2. Please perform subtraction and specify any carry/overflow:	-	(Enter result here. Should be 8 bits) Carry out of MSB? Yes No Overflow? Yes No
3. Now check your answer:		-
4. Show the solution:		-

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Last Update:
Created: August 24, 2020