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Intro to

Computer Science

Jake Shoudy

Aug 10, 2022

CSCI 110 - Lecture 1

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Today’s Agenda

	Class and instructor introductions Course overview Computer science overview

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Hello!

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Introduce yourself to

your neighbor!

Name and pronouns
Where you’re from
Why you took this class
Something non school related you’re looking forward to this semester

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Who Am I?

I’m a software engineer at Google (Seattle)
I love teaching
I care deeply about equity in tech
I like rock & mountain climbing, skiing, video games, soccer, sports, ukulele, music

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That's me!

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Google In Residence

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Who are your TAs?

Aman Singh

Junior majoring in CS. Originally from Nepal. Enjoys helping people learn new skills.

Aminu Abdusalam

Senior majoring in CS. TA’d this class last year. Originally from Nigeria. Interested in mentoring underclassmen.

Angel Adetula

Sophomore majoring in Biology and Data Science. Wants to share the experience of her favorite class from last year with new students.

Arun Giri

Junior majoring in CS. New to CS before taking this class in 2020. Claims this class was “one of the best experiences I ever had.” Likes Cricket, Soccer, and Table Tennis.

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Course Overview

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c sci110.org

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What is this class?

A gentle but thorough introduction to Computer Science using Python.
Core concepts of computer science

Language constructs

Conditionals, functions, for loops, while loops

Data structures

Lists, Dictionaries

Concepts

Encapsulation, efficiency, runtime, algorithmic thinking

Syllabus

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This course assumes absolutely no experience.

You’re in the right place.

Reminder

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Learning Zones

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Imposter Syndrome

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Class Time

Lecture MWF: 8AM-8:55AM (Libr-317)

New concepts
Some hands-on practice

Lab T: 8AM-9:50AM / 12:30PM-2:20PM / 3PM-4:50PM

(Libr-317)

Lots of hands-on practice
Get help!

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Class Time

Lecture MWF: 11AM-11:55AM (Libr-317)

New concepts
Some hands-on practice

Lab T: 8AM-9:50AM / 12:30PM-2:20PM / 3PM-4:50PM

(Libr-317)

Lots of hands-on practice
Get help!

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Class Time

Lecture MWF: 3PM-3:55PM (Libr-317)

New concepts
Some hands-on practice

Lab T: 8AM-9:50AM / 12:30PM-2:20PM / 3PM-4:50PM

(Libr-317)

Lots of hands-on practice
Get help!

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We will Always Be Coding

Homeworks: weekly assignments released on Tuesdays and due the following Wednesday at 11:59pm
Projects - 2 longer assignments throughout the semester
Quizzes - weekly on Fridays
Exams:

2 midterms (9/14 and 10/28)
1 final

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Grading

Two different weighted grading system
Your final grade will be the better of the two scores

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Grading Weighting 1 (for test takers)

Homeworks: 7%
Project 1: 12%
Project 2: 17%
Participation: 5%
Quizzes: 5%

Midterm 1: 13%
Midterm 2: 18%
Final exam: 23%

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Grading Weighting 2 (for project lovers)

Homeworks: 13%
Project 1: 18%
Project 2: 23%
Participation: 5%
Quizzes: 5%

Midterm 1: 7%
Midterm 2: 12%
Final exam: 17%

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Grading example

Grading weights 1: 85.37%
Grading weights 2: 82.43%

Final grade: A- (instead of a B+)

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Late Days

Homeworks are due at 11:59pm on Wednesdays, with a 10% penalty for each day that assignment is late up to 3 days max
Your first 2 late days are free (they do not negatively affect your grade)
Cannot be used on projects

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Dropped Assignments

Your lowest 2 homework grades will not count towards your final grade
Your lowest 2 quiz grades will not count towards your final grade

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We will be coding in Python on Edstem

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Virtual Tools

Official class resources:

csci110.org: class website, links to course materials, syllabus
Edstem: announcements, assignments, projects, quizzes, questions, help
Replit: online code editor great for experimenting with code
Canvas: grades (won’t be used for much else)
Email: jshoudy@fisk.edu

Unofficial: Google, Stack Overflow, YouTube, other programming courses on the web, various online documentation, etc.

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How to get help

My office hours
TA office hours
Labs
Edstem
Internet
Email

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Problem Solving Protocol (PSP)

Try something!
Google your error!
Rubber duck your code!
Ask a neighbor (when possible)!
Ask a teacher or TA

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Office Hours - MWF 2PM-3PM

Th 11AM-12:30PM

Come ask questions

...or just chat! Happy to talk about anything :)

Lecture questions + homework help

Ask early!

can book office hours on the class calendar!

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Quiz 0: Office Hours

Stop by before next Friday (August 19th) to get 100% on quiz #0!

You do not need to book a 15 minute slot :)

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Cheating policy

No copying from peers
No copying from online
Ensure that you understand the code you submit

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If I Suspect Cheating

I will ask you to explain your work
If you cannot explain it, I will conclude you’ve cheated

See next slide

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If I Catch Cheating

1st time

The Copier and the Copied will get automatic 0 for the assignment

2nd time

The Copier and the Copied will get automatic 0 for the course

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No copying

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OK… Questions on Cheating?

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What is Computer Science?

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What is Computer Science?

A field of study that covers a huge range of topics! ��Can be thought of as using computers/computing to solve problems.

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Software

Hardware

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Software

Hardware

1100 1001

1101 0111

0010 1101

1001 1001

while cond != True:

instr = gen_inst()

cond = eval(instr)

return instr

Understands “Binary Code” Instructions

Understands Human instructions

Compiler

This Class

Python

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Binary

Humans understand words. Computers understand 1s and 0s.

11001001 11010111 00101101 10011001

Bit

Byte

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Binary

Each 1 or 0 is called a “Bit”
8 bits make up a “Byte”

Does this sound familiar?

Each byte can be decoded into a human readable number (base-10)

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Base 10

Reminder: human numbers (base 10) work by adding up multiples of powers of 10.

4387

10³=1000

= (4 x 10³) + (3 x 10²) + (8 x 10¹) + (7 x 10⁰)

= (4 x 1000) + (3 x 100) + (8 x 10) + (7 x 1)

10¹=10

10²=100

10⁰=1

= 4387

4387

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Base 2 (binary)

Each Byte can be decoded into a human-readable (base 10) number.

01001101

2⁷=128

= (0 x 2⁷) + (1 x 2⁶) + (0 x 2⁵) + (0 x 2⁴) + (1 x 2³) + (1 x 2²) + (0 x 2¹) + (1 x 2⁰)

2⁶=64

2⁵=32

2⁴=16

2³=8

2²=4

2¹=2

2⁰=1

= 0 + 64 + 0 + 0 + 8 + 4 + 0 + 1

= 77

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Try it yourself [2 minutes]

What number does this byte hold?

11010100

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Try it yourself [2 minutes]

What number does this byte hold?

11010100

2⁷=128

= (1 x 2⁷) + (1 x 2⁶) + (0 x 2⁵) + (1 x 2⁴) + (0 x 2³) + (1 x 2²) + (0 x 2¹) + (0 x 2⁰)

2⁶=64

2⁵=32

2⁴=16

2³=8

2²=4

2¹=2

2⁰=1

= 128 + 64 + 0 + 16 + 0 + 4 + 0 + 0

= 212

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Understanding check [2 minutes]

What is the maximum number a byte can hold?

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Try it yourself [2 minutes]

What is the maximum number a byte can hold?

11111111

2⁷=128

= (1 x 2⁷) + (1 x 2⁶) + (1 x 2⁵) + (1 x 2⁴) + (1 x 2³) + (1 x 2²) + (1 x 2¹) + (1 x 2⁰)

2⁶=64

2⁵=32

2⁴=16

2³=8

2²=4

2¹=2

2⁰=1

= 128 + 64 + 32 + 16 + 8 + 4 + 2 + 1

= 255

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Running code

What happens when you run code?

num_people = 5

Compiler

10110110 00111001 10011010 11111001 11000101 00000001

Programming Language (Python)

Machine Language (Binary)

10110110 00111001 10011010 11111001 11000101 00000001

Output of the program:

Calculate something
Show an image
Make a sound

etc.

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Review: Computer Science

What is it?

Study of how computers work, and how they can be used to solve problems. We learned about the difference in software vs hardware and practiced converting from binary to base 10.

Why is this important?

Every industry today is impacted by digital tools, from Google to Gucci

How will we learn?

Lectures, Labs, Homeworks, Projects, Office Hours

How will we be graded?

Attendance, Homeworks, Projects, Quizzes, Exams

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Questions?