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Unformatted text preview: ECE 190 Midterm Exam 1 Spring 2011 Practice exam, February 2011 Name: NetID: Programming studio section (mark only the one you attend): DCL 440 DCL 520 9:00 AM [ ] AD4 [ ] AD6 12:00 PM [ ] AD5 [ ] AD8 1:00 PM [ ] AD3 [ ] AD7 2:00 PM [ ] AD9 3:00 PM [ ] AD1 [ ] AD2 Be sure your exam booklet has 5 pages. Do not tear the exam booklet apart. Write your name at the top of each page. This is a closed book exam. You may not use a calculator. You are allowed one handwritten 8.5 x 11" sheet of notes. Absolutely no interaction between students is allowed. Be sure to clearly indicate any assumptions that you make. Dont panic, and good luck! Problem 1 10 points _______________________________ Problem 2 5 points _______________________________ Problem 3 10 points _______________________________ Problem 4 5 points _______________________________ Total 30 points _______________________________ Page: 2 Name: ___________________________________________ Problem 1 (10 points): Binary representation Part A (2 points): What range of decimal numbers can be represented using 9 bits in each 2s complement, 1s complement, and unsigned binary representations? 2s complement: _____________________ 1s complement: _____________________ Unsigned binary: _____________________ Part B (2 points): Base 8 representation of numbers is called octal, and uses only digits 0 through 7. Give the following equivalent numbers for octal number 1275 in each binary, decimal, and hexadecimal representation....
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