TRANSCRIPT
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[301] IntroductionTyler Caraza-Harter
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Welcome to Data Programming!
Data is exploding in many fields• Journalism• Biology, physics, chemistry• Psychology, sociology, economics, business• Engineering (mechanical, electrical, industrial, etc)
https://home.cern/topics/large-hadron-collider
https://en.wikipedia.org/wiki/Neuroimaginghttps://fivethirtyeight.com/features/the-midwest-is-getting-drenched-and-its-causing-big-problems/
https://science.howstuffworks.com/life/genetic/gattaca-gaptacaz-adding-letters-the-genetic-alphabet.htm
http://www.stressebook.com/finite-element-analysis-in-a-nut-shell/
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Welcome to Data Programming!
Data is exploding in many fields• Journalism• Biology, physics, chemistry• Psychology, sociology, economics, business• Engineering (mechanical, electrical, industrial, etc)
How can we gain insights from that data?
![Page 4: [301] Introductioncompsci301--s19@lists.wisc.edu cs301-ta@lists.wisc.edu no-reply@caraza-harter.com. Communication is CS 301 Good communication is critical for a class of](https://reader033.vdocuments.us/reader033/viewer/2022060722/6082378407bf9e04a3748df4/html5/thumbnails/4.jpg)
Welcome to Data Programming!
Data is exploding in many fields• Journalism• Biology, physics, chemistry• Psychology, sociology, economics, business• Engineering (mechanical, electrical, industrial, etc)
How can we gain insights from that data?• With computation
![Page 5: [301] Introductioncompsci301--s19@lists.wisc.edu cs301-ta@lists.wisc.edu no-reply@caraza-harter.com. Communication is CS 301 Good communication is critical for a class of](https://reader033.vdocuments.us/reader033/viewer/2022060722/6082378407bf9e04a3748df4/html5/thumbnails/5.jpg)
Welcome to Data Programming!
Approach 1: human computation
https://en.wikipedia.org/wiki/Human_computer
Data is exploding in many fields• Journalism• Biology, physics, chemistry• Psychology, sociology, economics, business• Engineering (mechanical, electrical, industrial, etc)
How can we gain insights from that data?• With computation
![Page 6: [301] Introductioncompsci301--s19@lists.wisc.edu cs301-ta@lists.wisc.edu no-reply@caraza-harter.com. Communication is CS 301 Good communication is critical for a class of](https://reader033.vdocuments.us/reader033/viewer/2022060722/6082378407bf9e04a3748df4/html5/thumbnails/6.jpg)
Welcome to Data Programming!
Approach 1: human computation
https://en.wikipedia.org/wiki/Human_computer http://fortune.com/2015/11/15/intel-super-7/
Approach 2: machine computation
Data is exploding in many fields• Journalism• Biology, physics, chemistry• Psychology, sociology, economics, business• Engineering (mechanical, electrical, industrial, etc)
How can we gain insights from that data?• With computation
![Page 7: [301] Introductioncompsci301--s19@lists.wisc.edu cs301-ta@lists.wisc.edu no-reply@caraza-harter.com. Communication is CS 301 Good communication is critical for a class of](https://reader033.vdocuments.us/reader033/viewer/2022060722/6082378407bf9e04a3748df4/html5/thumbnails/7.jpg)
Welcome to Data Programming!
CS 301 is about approach 2• Faster, more reliable, can churn through more data
Approach 1: human computation
https://en.wikipedia.org/wiki/Human_computer http://fortune.com/2015/11/15/intel-super-7/
Approach 2: machine computation
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Welcome to Data Programming!
CS 301 is about approach 2• Faster, more reliable, can churn through more data• Automate to save human effort
“Find the leverage in the world, so you can be more lazy!” ~ Larry Page
Approach 1: human computation
https://en.wikipedia.org/wiki/Human_computer http://fortune.com/2015/11/15/intel-super-7/
Approach 2: machine computation
![Page 9: [301] Introductioncompsci301--s19@lists.wisc.edu cs301-ta@lists.wisc.edu no-reply@caraza-harter.com. Communication is CS 301 Good communication is critical for a class of](https://reader033.vdocuments.us/reader033/viewer/2022060722/6082378407bf9e04a3748df4/html5/thumbnails/9.jpg)
Welcome to Data Programming!
CS 301 is about approach 2• Faster, more reliable, can churn through more data• Automate to save human effort • Requires being able to tell computers what to do!
Approach 1: human computation
https://en.wikipedia.org/wiki/Human_computer http://fortune.com/2015/11/15/intel-super-7/
Approach 2: machine computation
society needs more domain experts in specific fields who can write code
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Welcome to Data Programming!
CS 301 is about approach 2• Faster, more reliable, can churn through more data• Automate to save human effort • Requires being able to tell computers what to do!
society needs more domain experts in specific fields who can write code
Goal: become "bilingual"• Speak the language of X (biology, mech eng, journalism, etc)• Speak the language of computing
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Why CS 301?
Common approach to introductory CS courses• Use a programming language like C++ or Java• Teach CS students and other majors together• Emphasis on theory• Light on data
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Why CS 301?
Common approach to introductory CS courses• Use a programming language like C++ or Java• Teach CS students and other majors together• Emphasis on theory• Light on data
CS 301 approach• Pioneered by Laura Hobbes LeGault• Use Python (powerful but easy easier to learn)• Goal: bring more programming into other fields• Practical, minimal theory• Emphasis on data, simulation, analysis, plotting
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Today's Topics
Introductions• Who am I? Who are you?
Course overview
Computer hardware basics
Website
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Who am I?
Tyler Caraza-Harter• Email: [email protected]• Just call me “Tyler”
Long time badger• Did undergrad, masters, and PhD at UW-Madison• 2nd time teaching CS 301
Work in industry• Worked at Microsoft on SQL Server and Cloud• Other internships/collaborations:
Qualcomm, Google, Facebook, Tintri
Open-source projects• OpenLambda project (Python-based platform)• PivotLibre project (preferential-voting tool)
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Who are You?
Year in school?• 1st year? 2nd? Junior/senior? Grad student?
Area of study• Natural science, social science, engineering, other?
How many have programmed before?• Any language? Python? Taken a class?
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Survey (counts for participation)
https://goo.gl/forms/WtWRjr7qFt4jYfEV2
Please help us get to know you (not anonymous):
Purposes:• gauge class interest/experience• determine who on waitlist is attending
(please finish by 4pm today!)• correlate experience with later scores
be sure to use yourcampus email!!!
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Survey: Common Technical Issues
if you see this, it means you'resigned in via Gmail instead ofyour campus email
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Survey: Common Technical Issues
if you see this, it means you'resigned in via Gmail instead ofyour campus email
if you were automatically signed intogmail without being asked, consider
clearing cookies or using anIncognito Window (in Chrome)
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Three types of students...1. Lazy CS senior
3. Enthusiastic beginner
2. Mandatory participants
Comment: drop this course and take something that challenges you.You're not the target audience, and we'll make zero effort to make 301 interesting to you.
Comment: we're working with the assumption that your future careers WILL involve writing code in the future. 301 is challenging because our goal to prepare you for it.
"I am a senior CS student, this class was very easy for me" [from F18 course eval]
"Make it significantly easier. None of [us] will ever code again..." [from F18 course eval]
"Good course, I think there is a good pace for this course, speaking as someone with zero programming experience coming into the class." [from F18 course eval]
Comment: this course is for you! Invest the time, and you'll walk away with a superpower (the ability to make computers work for you)
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Today's Topics
Introductions
Course overview• Learning objectives• Lecture• Lab• Readings• Class communication• Grades• Projects• Exams
Computer hardware basics
Website
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301 TopicsBasic Python • How to get data in/out of a program [I/O]• How does program remember things [state]• What is executed when [control flow]
Data structures • How to organize lots of data? [data structures]
Popular data formats • How to ingest tabular data, hierarchical data, web pages
Database basics • Asking questions about data [querying]
Plotting • Choosing and implementing visual communication
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Today's Topics
Introductions
Course overview• Learning objectives• Lecture• Lab• Readings• Class communication• Grades• Projects• Exams
Computer hardware basics
Website
![Page 23: [301] Introductioncompsci301--s19@lists.wisc.edu cs301-ta@lists.wisc.edu no-reply@caraza-harter.com. Communication is CS 301 Good communication is critical for a class of](https://reader033.vdocuments.us/reader033/viewer/2022060722/6082378407bf9e04a3748df4/html5/thumbnails/23.jpg)
Lecture Style
general concepts live codingworksheet practice
Your role • do readings before or after• feel free to bring your laptop along!
(but avoid the temptation to get distracted)• I love to get questions
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Lecture Attendance
Attendance isn't graded• One student's suggestion for improvement (f18):
"I think one MAJOR thing to do is make lecture mandatory"
Your Grade
attendanceprojects
examssome courses:
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Lecture Attendance
Attendance isn't graded• One student's suggestion for improvement (f18):
"I think one MAJOR thing to do is make lecture mandatory"
Your Grade
attendanceprojects
examssome courses:
![Page 26: [301] Introductioncompsci301--s19@lists.wisc.edu cs301-ta@lists.wisc.edu no-reply@caraza-harter.com. Communication is CS 301 Good communication is critical for a class of](https://reader033.vdocuments.us/reader033/viewer/2022060722/6082378407bf9e04a3748df4/html5/thumbnails/26.jpg)
Lecture Attendance
Attendance isn't graded• One student's suggestion for improvement (f18):
"I think one MAJOR thing to do is make lecture mandatory"
Your Grade
attendanceprojects
examssome courses:
Your Gradeattendance
projects
exams301:
![Page 27: [301] Introductioncompsci301--s19@lists.wisc.edu cs301-ta@lists.wisc.edu no-reply@caraza-harter.com. Communication is CS 301 Good communication is critical for a class of](https://reader033.vdocuments.us/reader033/viewer/2022060722/6082378407bf9e04a3748df4/html5/thumbnails/27.jpg)
Lecture Attendance
Attendance isn't graded• One student's suggestion for improvement (f18):
"I think one MAJOR thing to do is make lecture mandatory"
Your Grade
attendanceprojects
examssome courses:
Your Gradeattendance
projects
exams301:
Tip: as a student, you can make anything mandatory for yourself you like!Think carefully about what you should, then practice following through.
?
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Topic Progression
Programming knowledge builds• For first couple months, trying to skip foundational knowledge
will be problematic throughout the semester
increasing knowlege
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Today's Topics
Introductions
Course overview• Learning objectives• Lecture• Lab• Readings• Class communication• Grades• Projects• Exams
Computer hardware basics
Website
![Page 30: [301] Introductioncompsci301--s19@lists.wisc.edu cs301-ta@lists.wisc.edu no-reply@caraza-harter.com. Communication is CS 301 Good communication is critical for a class of](https://reader033.vdocuments.us/reader033/viewer/2022060722/6082378407bf9e04a3748df4/html5/thumbnails/30.jpg)
Labs
Format• 75 minutes on Thu or Fri, leave when you're done• typically: work through a practice document• self guided, not graded• purpose: prep for project
People• pair with another student each time• 1-2 TAs will be there to answer questions
Computers• lab computers are provided (must have 2 students per computer)• feel free to bring your own laptop
we will have labs this first week
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Today's Topics
Introductions
Course overview• Learning objectives• Lecture• Lab• Readings• Class communication• Grades• Projects• Exams
Computer hardware basics
Website
![Page 32: [301] Introductioncompsci301--s19@lists.wisc.edu cs301-ta@lists.wisc.edu no-reply@caraza-harter.com. Communication is CS 301 Good communication is critical for a class of](https://reader033.vdocuments.us/reader033/viewer/2022060722/6082378407bf9e04a3748df4/html5/thumbnails/32.jpg)
Readings (all free!)Think Python, 2nd Edition • Allen B. Downey• Assumes no programming background• It’s very concise• Get the 2nd edition, which is for Python 3!
Automate the Boring Stuff • Al Sweigart• Useful for some more advanced topics related
to using data
Course Notes • 301 instructors• Mostly for data science part of class
CS 301 Notes
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Today's Topics
Introductions
Course overview• Learning objectives• Lecture• Lab • Readings• Class communication• Grades• Projects• Exams
Computer hardware basics
Website
![Page 34: [301] Introductioncompsci301--s19@lists.wisc.edu cs301-ta@lists.wisc.edu no-reply@caraza-harter.com. Communication is CS 301 Good communication is critical for a class of](https://reader033.vdocuments.us/reader033/viewer/2022060722/6082378407bf9e04a3748df4/html5/thumbnails/34.jpg)
Communication is CS 301
Good communication is critical for a class of this size • Who needs to communicate: students, TAs, instructors
Besides direct email, we’ll use five communication tools • Piazza• Email lists• Feedback Form• Project Submission• Canvas
Students
Instructor TAs
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Communication is CS 301
Good communication is critical for a class of this size • Who needs to communicate: students, TAs, instructors
Besides direct email, we’ll use five communication tools • Piazza• Email lists• Feedback Form• Project Submission• Canvas
Students
Instructor TAs
![Page 36: [301] Introductioncompsci301--s19@lists.wisc.edu cs301-ta@lists.wisc.edu no-reply@caraza-harter.com. Communication is CS 301 Good communication is critical for a class of](https://reader033.vdocuments.us/reader033/viewer/2022060722/6082378407bf9e04a3748df4/html5/thumbnails/36.jpg)
Communication is CS 301
Good communication is critical for a class of this size • Who needs to communicate: students, TAs, instructors
Besides direct email, we’ll use five communication tools • Piazza• Email lists• Feedback Form• Project Submission• Canvas
Students
Instructor TAs
compsci301-<SEC>[email protected] [email protected]
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Communication is CS 301
Good communication is critical for a class of this size • Who needs to communicate: students, TAs, instructors
Besides direct email, we’ll use five communication tools • Piazza• Email lists• Feedback Form• Project Submission• Canvas
Students
Instructor TAs
![Page 38: [301] Introductioncompsci301--s19@lists.wisc.edu cs301-ta@lists.wisc.edu no-reply@caraza-harter.com. Communication is CS 301 Good communication is critical for a class of](https://reader033.vdocuments.us/reader033/viewer/2022060722/6082378407bf9e04a3748df4/html5/thumbnails/38.jpg)
Communication is CS 301
Good communication is critical for a class of this size • Who needs to communicate: students, TAs, instructors
Besides direct email, we’ll use five communication tools • Piazza• Email lists• Feedback Form• Project Submission• Canvas
Students
Instructor TAs
![Page 39: [301] Introductioncompsci301--s19@lists.wisc.edu cs301-ta@lists.wisc.edu no-reply@caraza-harter.com. Communication is CS 301 Good communication is critical for a class of](https://reader033.vdocuments.us/reader033/viewer/2022060722/6082378407bf9e04a3748df4/html5/thumbnails/39.jpg)
Communication is CS 301
Good communication is critical for a class of this size • Who needs to communicate: students, TAs, instructors
Besides direct email, we’ll use five communication tools • Piazza• Email lists• Feedback Form• Project Submission• Canvas
Students
Instructor TAs
![Page 40: [301] Introductioncompsci301--s19@lists.wisc.edu cs301-ta@lists.wisc.edu no-reply@caraza-harter.com. Communication is CS 301 Good communication is critical for a class of](https://reader033.vdocuments.us/reader033/viewer/2022060722/6082378407bf9e04a3748df4/html5/thumbnails/40.jpg)
Today's Topics
Introductions
Course overview• Learning objectives• Lecture• Lab • Readings• Class communication• Grades• Projects• Exams
Computer hardware basics
Website
![Page 41: [301] Introductioncompsci301--s19@lists.wisc.edu cs301-ta@lists.wisc.edu no-reply@caraza-harter.com. Communication is CS 301 Good communication is critical for a class of](https://reader033.vdocuments.us/reader033/viewer/2022060722/6082378407bf9e04a3748df4/html5/thumbnails/41.jpg)
Grades
49% - programming projects• 10 projects, not evenly weighted• we'll share grading tests with you - avoid surprise• learning to program is the most import part of the course
50% - exams• 15% midterm 1 (evening)• 15% midterm 2 (evening)• 20% final• finalized times coming soon
1% - participation• filling surveys, following directions, other
At end of semester, we'll add up your total score,then set a curve to determine letter cutoffs.
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Grades
49% - programming projects• 10 projects, not evenly weighted• we'll share grading tests with you - avoid surprise• learning to program is the most import part of the course
50% - exams• 15% midterm 1 (evening)• 15% midterm 2 (evening)• 20% final• finalized times coming soon
1% - participation• filling surveys, following directions, other
At end of semester, we'll add up your total score,then set a curve to determine letter cutoffs.
![Page 43: [301] Introductioncompsci301--s19@lists.wisc.edu cs301-ta@lists.wisc.edu no-reply@caraza-harter.com. Communication is CS 301 Good communication is critical for a class of](https://reader033.vdocuments.us/reader033/viewer/2022060722/6082378407bf9e04a3748df4/html5/thumbnails/43.jpg)
Today's Topics
Introductions
Course overview• Learning objectives• Lecture• Lab • Readings• Class communication• Grades• Projects• Exams
Computer hardware basics
Website
![Page 44: [301] Introductioncompsci301--s19@lists.wisc.edu cs301-ta@lists.wisc.edu no-reply@caraza-harter.com. Communication is CS 301 Good communication is critical for a class of](https://reader033.vdocuments.us/reader033/viewer/2022060722/6082378407bf9e04a3748df4/html5/thumbnails/44.jpg)
Prior student reaction to projects
Projects: How useful were projects to your learning?
Extrem
ely us
eful
Very us
eful
Modera
tely u
seful
Useful
Of little
use
Of very
little
use
Not us
eful a
t all
Projects are the heart and soul of CS 301
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Project Overview
Nearly all projects will relate to some dataset
Timeline • Projects will be due most weeks, on Wed, at midnight• You get 5 late days, use them wisely!• Contact us about any issues
Getting help • Piazza (don’t share substantial code) or email (do share code)• Lab sessions• Instructor or TA office hours• CSLC (Computer Science Learning Center)
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Pair Programming
You can optionally work in pairs of two • Partnerships across sections allowed• Switch partners between projects (or keep with same partner)
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Pair Programming
You can optionally work in pairs of two • Partnerships across sections allowed• Switch partners between projects (or keep with same partner)
partner 2partner 1
bad: partners don't share work
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Pair Programming
You can optionally work in pairs of two • Partnerships across sections allowed• Switch partners between projects (or keep with same partner)
partner 1
bad: working on different parts at different times
partner 2
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Pair Programming
You can optionally work in pairs of two • Partnerships across sections allowed• Switch partners between projects (or keep with same partner)
partner 1
better: working alongside each other
partner 2
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Pair Programming
You can optionally work in pairs of two • Partnerships across sections allowed• Switch partners between projects (or keep with same partner)
partner 1 partner 2
best: working on same computer
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Pair Programming
You can optionally work in pairs of two • Partnerships across sections allowed• Switch partners between projects (or keep with same partner)
partner 1 partner 2
Suggestions • Take turns coding (don't be greedy/aggressive!)• One person types, other makes suggestions and thinks about design
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Project Grading
your project
YOU
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Project Grading
your project
test programyou run tests
YOU
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Project Grading
your project
test programyou run tests
predicted test score
YOU
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Project Grading
your project
test program
predicted test score
you run tests
submit your project
YOU
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Project Grading
your project
test program
predicted test score
you run tests
submit your project
test program
we runtests
test score
YOU
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Project Grading
your project
test program
predicted test score
you run tests
submit your project
test program
we runtests
test score
TA looksat it
deduction = final-
YOU
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Project Grading
your project
test program
predicted test score
you run tests
submit your project
test program
we runtests
test score
TA looksat it
deduction = final-
prediction will usually be accurate(we'll be flexible if there are config
issues or irregular bugs)
deduction will usually be zero(don't cheat or try to defeat the tests)
YOU
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Project Grading
your project
test program
predicted test score
you run tests
submit your project
test program
we runtests
test score
TA looksat it
deduction = final-
prediction will usually be accurate(we'll be flexible if there are config
issues or irregular bugs)
deduction will usually be zero(don't cheat or try to defeat the tests)
code review
feedback is mostly about howto do things better or more simply(valuable even if you score 100%)
YOU
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Today's Topics
Introductions
Course overview• Learning objectives• Lecture• Lab • Readings• Class communication• Grades• Projects• Exams
Computer hardware basics
Website
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Exams
There will be two midterms and one final • Check website for dates/locations• One 8.5 by 11 in handwritten notesheet allowed only• Exams will be multiple choice scantron
Contents • cumulative• ideally not much time pressure• one goal: reward project partners doing more work over those
slacking
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Today's Topics
Introductions
Course overview
Computer hardware basics• Input/Output• CPU• Memory• Storage• Networking
Website
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Today's Topics
Introductions
Course overview
Computer hardware basics• Input/Output• CPU• Memory• Storage• Networking
Website
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I/O (stands for input/output)• What are examples for human?
Input/Output
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I/O (stands for input/output)• What are examples for human?
Input/Output
input: senses
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I/O (stands for input/output)• What are examples for human?
Input/Output
input: senses output: muscles
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Computer Input/Output
computer (in a case)
what are some common compute inputs?
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Computer Input/Output
keyboardmouse
computer (in a case)
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Computer Input/Output
keyboardmouse
computer (in a case)
what are some common compute outputs?
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Computer Input/Output
keyboardmouse
speakersmonitor
computer (in a case)
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Computer Input/Output
keyboardmouse
speakersmonitor
computer (in a case)
I/O devices attach via “ports” (e.g. USB) in back of computer
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Computer Input/Output
keyboardmouse
speakersmonitor
computer (in a case)
What’s inside a computer case?
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Computer Internals
https://commons.wikimedia.org/wiki/File:Personal_computer,_exploded_4.svg
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Computer Internals
https://commons.wikimedia.org/wiki/File:Personal_computer,_exploded_4.svg
Motherboard: main circuit board to which other components connect,
via sockets/slots
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Today's Topics
Introductions
Course overview
Computer hardware basics• Input/Output• CPU• Memory• Storage• Networking
Website
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Central Processing Unit (CPU)
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Central Processing Unit (CPU)
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CPUResponsible for computation• Runs code• Performs addition, other math• Compares numbers, text• Receives input, sends output• Some compare it to a “brain”
Runs on a clock• Typically a couple GHz (i.e., billions of ticks per second)• High-speed makes CPUs hot, require fans/cooling
Computers often have multiple CPUs• Motherboard may have multiple sockets• Single chip may contain multiple CPUs• Allows computers to do more things simultaneously
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Today's Topics
Introductions
Course overview
Computer hardware basics• Input/Output• CPU• Memory• Storage• Networking
Website
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Random Access Memory (RAM)
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Random Access Memory (RAM)
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MemoryMemory stores data for short term• RAM is most common form today (don’t worry about specifics)• CPU sends data to/from memory• Accessing it is very fast• It is “volatile” — meaning you lose this data when you power off
your computer• You don’t save “files” in memory, otherwise they would be gone!
Stores bytes of data• One byte ≈ one letter• The text “hello” requires 5 bytes• Typical personal computer has few to tens of gigabytes (billion
bytes) of memory
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Today's Topics
Introductions
Course overview
Computer hardware basics• Input/Output• CPU• Memory• Storage• Networking
Website
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Storage Drives
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Storage Drives
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Storage DrivesTwo common devices• HDD (hard disk drive), has moving parts, cheap, slow• SSD (solid state drive), no moving parts, expensive, fast• Both much slower than RAM...
Storage devices used to save data after power down• Persistant medium, in contrast to volatile RAM• Typical capacity: hundreds of gigabytes
When you make a directory/folder or save a file, that data is ultimately getting recorded to your storage device• Sometimes computers save to RAM first, and only to the device
later; power down cleanly to avoid losing your data!!!
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Today's Topics
Introductions
Course overview
Computer hardware basics• Input/Output• CPU• Memory• Storage• Networking
Website
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Network Interfaces
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Network InterfacesNetwork: often based on extension card or built into
the motherboard itself
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NetworkingNIC (Network Interface Controller)• Provides computer communication to
other computers, and the Internet
Wired vs. Wireless• Wired ethernet is common for
cable-based connection• Wi-Fi is common for radio-based
wireless connection
Terminology• Server: program/computer that runs, waiting for for incoming
requests, to which it responds• Client: program/compute that sends requests to a server
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Today's Topics
Introductions
Course overview
Computer hardware basics
Website
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Course Website
There are three lecture sections for 301 this spring. I’m teaching sections 2 and 3 and Caroline Hardin is teaching 1.
Shared website:https://tyler.caraza-harter.com/cs301/spring19/home.html
Walk through…
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Conclusion: five action steps for you
• take the "Who are You?" survey:https://tyler.caraza-harter.com/cs301/spring19/surveys.html
• read syllabus carefully:https://tyler.caraza-harter.com/cs301/spring19/syllabus.html
• sign into Piazza
• setup Python on your computer:https://tyler.caraza-harter.com/cs301/spring19/videos.html
• start Project 1 (due next Wed):https://tyler.caraza-harter.com/cs301/spring19/projects.html