HCI-631: Software Architectures for User Interface

HCI-631: Software Architectures for User Interface

Scott Hudsonhudson@cs.cmu.edu

Office: Wean 1309Office Hours: TTh 1:30-2:30

HCI-631: User Interface Software Architectures

Scott Hudsonhudson@cs.cmu.edu

Office: Wean 1309Office Hours: TTh 1:30-2:30

HCI-631: ... or something like that…

Scott Hudsonhudson@cs.cmu.edu

Office: Wean 1309Office Hours: TTh 1:30-2:30

HCI-631: Software Architectures for User Interface

Scott Hudsonhudson@cs.cmu.edu

Office: Wean 1309Office Hours: TTh 1:30-2:30

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What is this class about?

Organizing principles of UI software

Practice in UI implementation

(About HCI-630…)

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Why is this interesting?

Computers are exploding into society– Pervasive computing power– Small, cheap, powerful

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World’s smallest web-server (runs Linux)

http://wearables.stanford.edu/hardware.html

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That was 3 months ago… Now...

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That was 3 months ago… Now...

http://www-ccs.cs.umass.edu/~shri/iPic.html

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Parts cost is around $1

If you can add $3-$5 to the cost of something, you can add a processor– if there is something of value to be

gained (doesn’t have to be much) Full PC ~ $400

(or free with Internet service)

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Parts cost is around $1

~80x faster than the computer that “landed men on the moon”<50Khz (0.05Mhz) vs. 4Mhz

And ~2x memory~2K RAM, ~64K ROM vs.

41b RAM, 259K EEPROM

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We haven’t seen anything yet

Good S

tuff

Time

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Moore’s Law

CP

U S

peed

Time

Now

Human capabilities

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Moore’s law

At given price point, CPU speed doubles every 18 months– Low end (<$1) chip will have today’s

high-end performance in ~10 years Corollary: at a given

performance point price drops fast

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Hard to really understand exponential growth There has been huge

performance gains since (say) 1960

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Hard to really understand exponential growth There has been huge

performance gains since (say) 1960

ALL those speed gains will happen again in 18 months!!

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End result: big impact on the world

Large numbers use computers– many more will soon

Almost no one in our society is not affected in some way by computers

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Massive computational power available for next to nothing No longer “Can you build it?” Now: “Can they use it?”

(“Will they use it” => “Can I sell it”)

This class is to teach fundamentals of building (usable) interactive systems

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Syllabus

Me Text Projects Grading (55% proj, 45% exams)

– Midterm and comprehensive final

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Syllabus

On-line materials:http://www.cs.cmu.edu/~hudson/05-631

(any second now…)

Schedule– Don’t take this TOO seriously

Everyone send me email (today)

hudson@cs.cmu.edu

Fill out and return questionnaire (now)

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