Binary Numbers
Wednesday, May 18, 2011
COMP 1001: Introduction to Computers for Arts and Social Sciences
Admin Stuff
• Use forums to ask questions (email ok too)
• Should we change Andrew W’s office hours to
Thursday?
• Assignment 1 due Sunday night
• Assignment 2 due Monday May 30
• Monday is a holiday! :D
• Guest speaker and quiz next week
COMP 1001: Introduction to Computers for Arts and Social Sciences
Note Taker
• The Paul Menton Centre for Students with
Disabilities is looking for a Volunteer Notetaker
for this class. The criteria for being a Volunteer
Notetaker include:
– Attending all assigned classes
– Taking complete and legible notes
– Typing up lecture notes and submitting them
electronically within 48-hours after each Class (math
& other formula heavy notes can be scanned at the
Notetaking Office)
– Maintaining confidentiality
COMP 1001: Introduction to Computers for Arts and Social Sciences
Binary Numbers
http://csunplugged.org/binary-numbers
COMP 1001: Introduction to Computers for Arts and Social Sciences
Binary Numbers
http://csunplugged.org/binary-numbers
COMP 1001: Introduction to Computers for Arts and Social Sciences
The Decimal Equivalent
Decimal = The Numbers We Usually Work With
1’s column, 10’s column, 100’s column, …
10 digits available (0-9)
(5 * 1) +
(6 * 10) +
(3 * 100) +
(2 * 1,000) +
(6 * 10,000) +
(4 * 100,000)
----------------462,365
COMP 1001: Introduction to Computers for Arts and Social Sciences
The Decimal Equivalent
Binary = A New Way to Represent the Same Numbers
1’s column, 2’s column, 4’s column, 8’s column…
2 digits available (0-1)
(1 * 1) +
(1 * 2) +
(0 * 4) +
(1 * 8) +
(0 * 16) +
(0 * 32) +
(0 * 64) +
(1 * 128)
------------139
COMP 1001: Introduction to Computers for Arts and Social Sciences
COMP 1001: Introduction to Computers for Arts and Social Sciences
Binary Numbers in 60 Seconds
http://www.youtube.com/watch?v=q
dFmSlFojIw
COMP 1001: Introduction to Computers for Arts and Social Sciences
How high can you count on your
fingers?
http://www.youtube.com/watch?v=i
Yb5w8L2NSc
COMP 1001: Introduction to Computers for Arts and Social Sciences