It's 8th of June (2024) and I am starting this course today. I'll complete the whole course and tell about my experience here. Best of luck to me !

this dude is max level in presentation and public speaking

I am so glad to have started this course! And am even more jealous of the students who get to take it live! Thank you Harvard for making this accessible to us :')

Hello, world! I'm starting CS50X today, looking forward to learning with everyone. All the best, hopefully I will see you all at the finish line.

Watching the beginning of this video makes me wanna cry. It moved me because of the quality of education in this world, one that I missed during my younger time. Now that I am a father of a little boy, it also encourages me to become a better dad, and to try to raise my boy so that he's eager about education out there, so that he can fulfill the dream that his dad missed. Thanks Harvard for making this available.

I am from india and here we have a rigorous entrance exam which consists of physics chemistry and maths and it made me lose my interest in the things I loved about computers and programming now when I couldn't clear the entrance exam twice I am here to revive the interest and get hold of my passion thanks sir David for again making me believe myself will definitely complete this course

Just completed CS50. It is absolutely worth it. David carries forward the same energy in all the lectures. The course might eventually feel more difficult, but it will be absolutely worth it. Good luck everyone!

Dr. Malan is hands down one of the greatest teachers ever it's not just his knowledge of the field and technical acumen but his ability to convey such knowledge in a way that inspires you while at the same time making it fun and accessible to anyone. Thank you so much for your incredible work Dr.Malan and thank you Harvard for making this gem available to us all.

Have a great year!🎉

It's my first day at CS50 and I am too excited as I have watched this First video and I have to say that David is best Teacher in His Field. He knows how to teach . He is such an amazing Teacher. I am feeling jealous from the students who have attended it Live but not an issue I can watch it online. Thanks to David and Harvard for making this course free.

Don't know why someone said this lecture is ugly. It's the true programming 101 for those students with no base. Unlike Harvard, UCL, just tell you what does each term do, and let you start programming, assuming everyone is genius who can programme without understanding the logic behind that.

Finally! Starting again. This time I am finishing the CS50X ingshaAllah

It has been 22 years since I earned my master's degree. I wish I had a professor like this at UCSD & USD. His passion and explanation of the subject matter make CS more interesting and captivating. I'm so jealous! I love watching all these videos for my self-gratification. Thanks for making it accessible to the public!!!

I’ve begun watching 2023 edition, it’s not just a lecture course it’s like mini series with good and effective video. So jealous all of Harvard student who had learned this course live! even I’m middle age still wanting to learn! Omg Happy new year! ❤

Here's to another fantastic year with CS50 in 2024! The passion and dedication Professor David Malan brings to teaching create an enjoyable and memorable learning experience. CS50 is more than a course; it's an inspiring journey led by an exceptional educator. Thank you, Professor Malan, for your steadfast commitment to fostering a deep understanding of computer science and making it accessible to learners of all backgrounds. Warm greetings from Turkey, where your impact is felt across borders!

Congratulations to the team behind these "Lectures" videos. I think it's the best way of teaching on KZfaq since it grabs our attention, it's not boring as slides and monotonal narratives. It just keeps us interested and a 2 hours video seems to be so fast. You guys are the best!

Thank you for all the life changing work you do by providing this to the global community! ❤ Happy New Year from Indonesia. 🎉

49:56 they really rick rolling us

Just finished this lesson to find out they made an updated version! Decided to give it a second watch and was glad to see the additional resources provided. Thanks everyone for all that you do!

I took this course in 2023 and quickly fell out around lecture 3. But this time in 2024, I'm gonna finish it. I now understand binary and the concepts of functions, Booleans, etc. My original major was Computer Engineering 10 years ago before dropping out. I've learned a bit of Python along the way and now want to take it to the full extent. I've studied a bit of A+, Sec+, and Net+. This was so well developed that I'm just grateful I get to take another stab at it. Thank you so much for being an inspiration in changing lives, CS50. Anyone with enough determination can grasp the concepts, and maybe somewhere along the way, I can find where Computer Science fits into my life. I urge anyone scared of taking this course to reevaluate it in the sense that it may be daunting, but anything is possible with enough passion for learning something new. I can't wait to update once I get the certification.

I feel really thankful for having this course for free. Thanks a lot. I like your enthousiasm throughout the class.

Your teaching style send chills down my spine, super engaging. God Bless You.

A start of 2024 with CS50 is the best start! Greetings from Italy.

My year to Get my dream straight. Thank you Mr malan and Cs50 Harvard

Happy New Year 2024! Start the year by studying CS50. Thank you our great lecturer!

37:10 This is just so nice to see. They were all given something, and the man believes that two people are left without something. So he immediately tries to give it to the girl. What a nice gentleman. Lovely to see. This is a really great course, thanks.

I’ll be finishing the course this time. Although I have lot of programming knowledge by now. This is a classic 🎉

I officially completed this yesteryear on the 30th. Now that the new year has begun I want to thank Everyone that made this possible! - Jelte

Starting on 13th March 2024! Hope we can go through this and complete the course!

I watched cs50 11 years ago now an UI engineer over 10 years, thanks D.J malan

Thx so much for making this free! The instructor gives an absolutely great performance, entertaining and highly informative! Also I'd never thought to get rickrolled by Harvard :D

Hey everyone! Completed a 6 month software engineering bootcamp feeling very insecure about my knowledge and ability to apply things on my own. Hoping to fill in any gaps and gain more confidence through this course and extra practice. So grateful to be here!❤️🙏🏾

🎯 Key Takeaways for quick navigation: 04:02 🚀 *CS50 is Harvard's introduction to computer science and programming, providing a versatile mindset applicable across various fields.* 06:56 📚 *The course covers not only the C language but also Python, SQL, and JavaScript, emphasizing practical skills applicable to real-world software development.* 08:20 💡 *The class focuses on problem-solving, introducing concepts like algorithms and code to represent and manipulate different types of data, from numbers to multimedia.* 09:47 🤝 *The course offers support structures for students of various skill levels, fostering a community-oriented learning environment.* 12:38 🔍 *Computer science, fundamentally about solving problems, is approached through computational thinking, improving thought processes and precision in expressing ideas.* 20:39 🔢 *Binary numbers are represented using the base-2 system, similar to how humans use the base-10 system (decimal), with each digit position holding a different power of 2.* 22:07 💡 *Explaining the binary system, using 0s and 1s to represent values based on powers of 2.* 23:33 🤖 *Connecting the concept of bits (0s and 1s) to representing instructions for computers, using the example of controlling a robot like Spot.* 26:24 🖥️ *Introducing bytes as a more practical unit of measure, with each byte consisting of eight bits, and explaining their use in representing numbers.* 28:20 🅰️ *Discussing ASCII as a system to represent letters with numbers, where each character is assigned a unique value.* 31:10 🚀 *Demonstrating the mapping of ASCII codes to letters, showcasing how binary patterns represent characters.* 39:12 🌐 *Unicode's mission is to represent and preserve all human languages digitally, capturing the entirety of human knowledge through characters and emojis.* 40:10 😂 *Emojis, represented in Unicode, can vary in appearance across platforms (e.g., Apple, Android, Microsoft), as they are essentially characters with different visual interpretations.* 41:34 🧑🏽‍💻 *Unicode uses hexadecimal representation (base-16) to express characters more compactly than binary, allowing for efficient representation of emojis like "face with tears of joy."* 42:59 🌈 *Representing diverse skin tones in emojis is achieved by modifying the default color pattern, providing variations without creating entirely new patterns for each combination.* 44:25 💑 *Emojis like "couple with heart" use combinations of Unicode code points for individual elements (e.g., man, woman, heart), showcasing the expressive possibilities of character combinations.* 45:49 🕵️ *U+ is a convention indicating a Unicode code point, serving as a visual clue for representing characters, and allowing standardization across different platforms.* 46:44 🎨 *Colors in computers are commonly represented using RGB values, with each pixel on a screen having three numbers (red, green, blue) to determine its color.* 51:53 ⚙️ *Algorithms are step-by-step instructions for solving problems. Binary search, illustrated with a phone book example, is an example of a more efficient algorithm compared to linear search.* 56:13 📈 *Binary search is a fundamentally more efficient algorithm than linear search, reducing the time complexity from O(n) to O(log n) by repeatedly dividing the problem in half.* 57:42 📈 *Algorithms can be compared based on efficiency, not just correctness. The shape of an algorithm's graph, such as logarithmic growth, indicates efficiency.* 58:09 🔄 *Efficient algorithms become crucial with larger datasets. Designing well-optimized algorithms is a key aspect of becoming a better programmer or problem solver.* 58:38 ❓ *Focus on acquiring skills to solve problems efficiently over time, not just correctly. CS50 emphasizes writing code that is both correct and well-designed.* 59:35 ❌ *The efficiency graph doesn't capture the correctness of an algorithm. Correctness requires logical analysis, while efficiency is about design and execution speed.* 01:00:32 📝 *Pseudocode is a way to express algorithmic thoughts before coding. It's written in human language, conveying steps clearly and precisely.* 01:06:42 🤖 *Large Language Models (LLMs) like ChatGPT use patterns in language to infer responses based on vast amounts of input data.* 01:10:03 🦆 *CS50 introduces an AI-based software, the CS50 duck, to aid students. The goal is to strike a balance between helpfulness and encouraging independent problem-solving.* 01:11:28 🚧 *CS50 discourages the use of external AI-based tools, emphasizing the use of its own AI software, the CS50 duck, to maintain an intellectual balance.* 01:12:56 🔗 *The CS50 duck, an AI-based tool, aims to serve as a helpful tutor rather than simply providing answers. It offers assistance within the context of the course.* 01:14:49 🤔 *Binary representation is abstracted; understanding 0's and 1's is less important than recognizing their use to represent numbers, letters, and other quantities.* [01:15:46 URL](kzfaq.info/get/bejne/abKAfcl6sN7bh5c.html) *🧠 The focus in this lecture is on programming ideas rather than syntax or characters on the keyboard.* [01:16:44 URL](kzfaq.info/get/bejne/abKAfcl6sN7bh5c.html) *🧩 Scratch, a cloud-based editor, will be used for the first homework (problem set 0) to visually represent programming concepts.* [01:17:40 URL](kzfaq.info/get/bejne/abKAfcl6sN7bh5c.html) *🎨 Scratch's user interface is based on puzzle pieces or blocks categorized by color, representing different programming elements.* [01:18:37 URL](kzfaq.info/get/bejne/abKAfcl6sN7bh5c.html) *🌐 Scratch operates in a 2D world with x and y coordinates, and the cat sprite can move based on these coordinates.* [01:19:06 URL](kzfaq.info/get/bejne/abKAfcl6sN7bh5c.html) *🔗 The speaker demonstrates creating a simple program in Scratch to display "Hello, world" using puzzle pieces.* [01:21:00 URL](kzfaq.info/get/bejne/abKAfcl6sN7bh5c.html) *🧩 Scratch's "say" block represents a function, and the white oval allows customization of the function's behavior (parameters or arguments).* [01:26:42 URL](kzfaq.info/get/bejne/abKAfcl6sN7bh5c.html) *🔄 Combining Scratch puzzle pieces, like "join" and "ask," demonstrates composing inputs and outputs in programming.* [01:34:46 URL](kzfaq.info/get/bejne/abKAfcl6sN7bh5c.html) *🔄 Generalizing Functions: By creating a function "meow" with an input parameter for the number of times to meow, generalization is achieved. This modular approach simplifies the code and enhances flexibility.* [01:35:42 URL](kzfaq.info/get/bejne/abKAfcl6sN7bh5c.html) *🎮 Creating Interactive Programs: Implementing conditional statements (if touching mouse pointer) and loops (forever) allows the creation of interactive programs. Demonstrated with a cat that meows when touched by the mouse pointer.* [01:39:27 URL](kzfaq.info/get/bejne/abKAfcl6sN7bh5c.html) *🎥 Video Sensing Extension: Extending Scratch functionality with Video Sensing allows for more interactive programs. In the example, the cat responds to the user's hand movements captured by the camera.* [01:42:20 URL](kzfaq.info/get/bejne/abKAfcl6sN7bh5c.html) *🕹️ Game Development: Game development in Scratch involves combining basic building blocks like loops, conditionals, and sensing to create engaging experiences. Illustrated with a "Whac-A-Mole" game.* [01:46:35 URL](kzfaq.info/get/bejne/abKAfcl6sN7bh5c.html) *🛣️ Incremental Development: Developing complex programs is simplified by taking incremental steps. Demonstrated through the evolution of "Oscartime," where each version added new features, making the game more interactive.* [01:49:55 URL](kzfaq.info/get/bejne/abKAfcl6sN7bh5c.html) *🔄 Iterative Design: Iterative design involves refining and enhancing a project through multiple versions. "Oscartime" development showcased how initial ideas evolved over iterations to create a more engaging program.* 01:51:50 🎮 *Implementation details of the game involve abstraction through custom puzzle pieces for listening to the keyboard and feeling for walls.* 01:53:17 🏞️ *Introducing an obstacle (Yale block) involves conditional checks for touching the left or right wall, adding complexity to the game.* 01:54:44 🐞 *Increasing the speed of the Yale block revealed a bug due to the fast movement, highlighting the importance of adjusting game mechanics for smooth gameplay.* 01:55:43 🤖 *Introducing MIT into the game involves MIT tracking the Harvard logo outline, showcasing the flexibility of implementing different game elements.* 01:57:10 🕹️ *The lecture concludes with a student playing the full-fledged game, demonstrating the combined mechanics of keyboard input, obstacle avoidance, and smart MIT tracking.* 02:00:03 🎓 *The presentation ends with a musical performance, "This is CS50," featuring creative lyrics about coding, debugging, and a humorous tribute to rubber duck debugging.* Made with HARPA AI

That was one of the best and most fun classes i've taken hahahah , the ending was super cool!

happy new year Professor Malan!🙏

Thanks to Sir David Malan , Cs50 team and Harvard , i am enjoying very much and learning new things , enjoying with the duck and robo starting out new year with Cs50

Just finished the lecture 0 and going to watch the other lectures consistently daily.

great lecture thank you David and all hard workers on this

This was such a good lesson. I have 0 experience with CS but am an avid gamer and the part with scratch and breaking down the functions and conditionals really made me look at games in a new light. The theatrics were really solid too. Makes me wish I had taken school seriously.

I started today and see you again after finishing the course 🙏

just started this course!! so excited to learn :) good luck to everyone, we can do this 🖤🖤

Learning this useful things at the age of seventeen ✨️ 😊❤. Thank you so much for this lovely session. I'll be happy to watching your all lectures.... LOVE FROM INDIA 🇮🇳

Have a great year guys ❤

Feels like being in the actual lecture room. Entertaining, engaging and it makes me stoked about becoming a computer scientist.

Happy New Years CS50 Students! 🎉

This will be my first and. Last cs50 class ❤❤😊i will give full time for this class

So excited to be a part of this 😊

I'm too excited to complete the 1st lecture, hope to continue the entire journey ❤

Have a great year❤

"Lecture 0" I see what you did there

I'm starting from CS50 today, excited to complete the course 🤩

happy new year happy new chapter cs50

This is so awesome, what would I not give to attend it in person 🎉❤

Happy New Year and all the best for 2024 ! Happy Coding 😃

I am really grateful for this course thanks harvard

just starting with cs50x 2024 course. Excited to match David j malan's energy along the way. Woah!🥳

New year, new goals, here's to the new journey!

So a class at Harvard is no less than a theatrical performance! Makes me want to attend it live!!

Starting on 16th march. I'll come here after a while (maybe a year) to remember my beginning ... Thank you harvard💞

The opportunity to learn from such a prestigious institution like Harvard University has been invaluable. I express my sincere gratitude for offering CS50. Your dedication to making quality education accessible has opened doors for many like me to explore the exciting world of computer science.

David is an amazing teacher, i love his enthusiasm

I‘m so excited and ready for the course 😍

The acapella performance was dope! I love CS50 and Dr. Malan

Staring this course I have 5 weeks before I start university! I’m a 2nd year in cs and this is really effective to reflect and maybe upskill !!

Happy new year everyone 🎉❤

I'm so happy to be here learning with you. It taught me a lot and, of course, this course being free will help much more people that are learning CS, Programming or something like this but that likes technology. I'm on my fourth semester of my Computer Science Bachalor's Degree Greetings from Brazil

I've never had a "passion" for this but that first part of binary had me confused 😂 had to go back rewatch, take notes. Love his enthusiasm!

Have a happy new year 🎉 😊

tideman still haunts my dreams...Best course you will ever take!

Thanks for everything❤️.

I have finally watched one full lecture of cs50 and aaa im lovin ittt

Just WOW! What a fun and brilliant course!

Such a great course! Excited :D

Just starting off. Time to enjoy the ride

Wish could see more of CS courses open on KZfaq.

I started today, here we go 💪🏽

I was following this lecture while im working and it was very good thank you CS50

I discovered the other day that there are full problem sets and everything available on the website, so I'll be following this course properly this time :)

January 1st drop !?!? CS50 staff ain’t messing around. Have an amazing new year !!

Happy New Year everyone 🎉🎉 Happy New Year to all the A+ students who are not waiting to start their 2024 New Year’s resolution 💞🥳🤩🎊🎊🤩

It's insane how David is so excited with teaching that he, multiple times, becomes breathless and exhausted for speaking a lot or running between laptop and screen. Gives me great motivation to study!

love CS50 and Harvard. I wish I had been there... anyways many thanks for making it free and accessible for everyone around the world

Wow, what a great introduction to not only the first week but to the course itself. Lots of great information and very entertaining as well. If you're planning to only watch parts of the lecture then it would be a mistake. So, be sure to watch from start to finish. You won't regret it.

Fantastic! Thank you very much

Happy New Year 🎉🎉🎉

This is remarkable effort of creating such a great course. I added so much knowledge about programming because of this course. Thanks David J. Malan. Lots of Love from Pakistan

I LOVE CS50 AND HARVARD, LETS HOLD CS50 ONLINE FOREVER

Hello, world! This is just so exciting and interesting!

I'm so excited! Let's gooo! 😄

Learned about CS50x way too late in 2023, so I decided to just audit and start fresh in 2024. Love the lectures and Prof. Malan energy! This definitely has made me even more excited to learn about computer science.

I'm bad at programming, but NOT FOR LONG. WISH ME LUCK BOYS 👽

Loved every second of this

my gosh... if i would have this man as teacher... even so i'm thrilled with this

Thanks for this wonderful lecture

So great, he is a great speaker!

The best CS course with the best teacher!

STARTING TODAY 10th May!

Hehe... starting today 💯 All the best to me👀🥂

I almost forgot this was an actual university lecture until the acapella group did their recruiting thing at the end! 😆

These kids worked hard to get there and it's such a prestigious university. Thanks for offering this course for free.