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BME 303 Lecture 4
• Briefly Review: Binary Fractions
• Continue: Floating Point Numbers
• ASCII Characters (Text)
• Logical Operations
– Boolean operations
– Boolean algebra
2
Rudy Ortiz:
Staff Excellence Award
•
Go to the following web site and complete the form
http://www.utexas.edu/staff/excellence/nom_form.html
•
Select Nomination Type.
..
Staff Excellence Award Nominee
•
Nominee Information.
..
Name of Nominee:
Rudy Ortiz
Title:
Academic Advisor II
Department:
Biomedical Engineering
Campus Mail Code:
C0800
•
Supporting Statement:
Tell YOUR story about how Rudy has helped you!
•
Nominator Information.
..
Nominator’s name:
Your Name
Email:
Your @utexas email
Department:
Biomedical Engineering
Campus Mail Code:
N/A
•
Nomination deadline is 5 p.m. on Monday, January 31, 2005.
Sent to me by Prof. Emelianov – I am just passing this along
3
• Revised Office Hours:
– Tuesday, 12:30 – 1:30 pm (½ hour earlier)
– Friday, 9 am – 11 am
• Revised homework deadlines:
– All assignments now due Tuesday before
class (not Thursday); Therefore HW #1 due
next Tuesday, February 1
– Assignments still given before 9 am Friday
morning (HW #2 assigned tonight)
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Class website: more problems
• I still don’t have access to online Blackboard
• Temporary website has been down:
http://chaos.ph.utexas.edu/~mgmoore/bme303/
– Course syllabus and course schedule
– Slides for lectures 14
• Prelecture slides are drafts and subject to change (even
before the lecture) – generally contain more material
than we will cover.
• Postlecture slides only contain what was actually
covered in class, will include quiz, may include
corrections and notes.
• Now posted in two methods (pdf): 1 slide/page and 6
slides/page
– HW #1, HW #2 will be posted when site up
5
• Reminder: Textbook Website
http://www.mhhe.com/patt2/
– Includes:
• Errata page (including errors in homework
problem statements)
• Solutions to odd numbered problems
• HW #1, problem 2.14: Express answer as
5 bits if it overflows 4 bits.
• New schedule posted – reading for before
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Weighted Positional Number Systems: Fractions
Decimal:
35.254 = 5·10
0
+ 3·10
1
+ 2·10
1
+ 5·10
2
+ 4·10
3
Binary:
(10.101)
2
= 0·2
0
+ 1·2
1
+ 1·2
1
+ 0·2
2
+ 1·2
3
= 0 + 2 + 0.5 + 0 + 0.125
= (2.625)
10
= 2
5
/
8
.
.
.
4
5
2
5
3
d
3
d
2
d
1
d
0
d
1
3
2
1
0
1
1
0
1
.
0
1
.
.
b
3
b
2
b
1
b
0
b
1
3
2
1
0
1
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Conversion from (Whole)
Decimal to Unsigned Binary
0
1
1
0
1
0
1
b
0
b
1
b
2
b
3
b
4
b
5
b
6
0
1
2
3
4
5
6
Example: convert decimal 86 to an 8bit unsigned integer.
86/2 = 43 remainder
0
43/2 = 21 remainder
1
21/2 = 10 remainder
1
10/2 = 5 remainder
0
5/2 = 2 remainder
1
2/2 = 1 remainder
0
1/2 = 0 remainder
1
Reached 0, stop.
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 Spring '08
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 Fraction, Binary Floating Point, medicine AND biology medicine OR biology biology AND medicine AND engineering biology AND medicine OR engineering biology OR medicine OR engineering biology AND medicine AND NOT engineering

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