CSC 156 Fall 2025 - Homework 7 (100 pts. total)
Assigned Wed Oct 22, due Wed Oct 29Fri Oct 31
BEFORE STARTING THIS ASSIGNMENT:
Before starting the exercises given below for each section, please make sure to read each section and check your understanding (by doing the participation exercises and those additional exercises with answers provided).
FOR ALL QUESTIONS IN THIS ASSIGNMENT:
Answer each question. *Make sure to justify your answer for all questions. Do NOT just state the answer.*
THE ASSIGNMENT:
[20 pts.] Question 1a: Find the 8-bit binary expression for 49 and for -49 (using the two's complement notation).
[10 pts.] Question 1b: Use binary addition to show that the sum of the binary numbers for 49 and -49 (found in part a) is the binary number 00000000. When justifying your work, be sure to clearly indicate where the digit '1' was carried.
[10 pts.] Question 2: What unsigned integer in decimal format is represented by each binary number: a) 1001011 b) 11001011
[10 pts.] Question 3: If the binary number 11001011 represents a signed integer in two's complement notation, what is that integer in decimal format?
[15 pts.] Question 4: Express the hexadecimal number 2B3 in binary and in decimal.
[10 pts.] Question 5: Express the decimal number 361 in hexadecimal.
[10 pts.] Question 6: Convert each binary number into hexadecimal: a) 101011 b) 100100111111
[15 pts.] Question 7: Express the hexadecimal number 1ADF in decimal.
Last Modified: 10/22/25