ECE 190 Midterm Exam 1
Spring 2011
Tuesday, February 15, 2011
Name:
NetID:
(TA USE ONLY):
Computer Station:
______________________
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Be sure your exam booklet has 5 pages.
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Do not tear the exam booklet apart.
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Write your name at the top of each page.
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This is a closed book exam.
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You may not use a calculator.
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You are allowed one handwritten 8.5 x 11" sheet of notes.
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Absolutely no interaction between students is allowed.
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Be sure to clearly indicate any assumptions that you make.
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Don’t panic, and good luck!
Problem 1
10 points
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Problem 2
5 points
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Problem 3
10 points
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Problem 4
5 points
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Total
30 points
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Problem 1 (10 points): Binary representation
Part A
(2 points):
What is the 8bit result of adding the following pairs of 8bit numbers
together?
a
)
11100111 + 01110001 = _________________________
Assuming 8bit 2’s complement representation, is there overflow? (circle one)
yes
no
Assuming an unsigned representation, is there overflow? (circle one)
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 Spring '08
 Hutchinson
 #, 2bit, 1bit, 2 bits

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