# Part 2 (computers)

## Watch

* [How Computers Work](https://www.youtube.com/playlist?list=PLzdnOPI1iJNcsRwJhvksEo1tJqjIqWbN-) (27min of short videos in a playlist)
* [How the Internet Works](https://www.youtube.com/playlist?list=PLzdnOPI1iJNfMRZm5DDxco3UdsFegvuB7) (40min worth of videos)
  * optional resource = [An Introduction to Computer Networks](http://intronetworks.cs.luc.edu/current2/html/intro.html) (textbook)

## Assignment:

Each person in the class will be assigned a number below to research and teach the term or question to the class during using Google Slides thoroughly explaining the concept:

1. * What makes a computer a computer?
   * What are sensors?
   * What is a computer "bus" ... what does an audio bus do?
2. * Define binary (use the following terms in your definition: machine language, high-level, low-level).
   * What type of file or media would most likely take up 196 B (bytes)? 182 KB (kilobytes)? 4 MB (megabytes)? 65 MB? 3 GB (gigabytes)?
3. * What is a transistor, what did it replace, and why is it the most important invention of the 20th Century?
4. * Define CPU, describe what it does, and discuss hardware solutions for cooling them?
   * What is a multicore processor? How many cycles (steps of instructions) per second can a quad core 2.4 GHz processor perform?
5. * Define memory (RAM), explain its function, and an example of how it is practically used every day.
   * Define and discuss storage (SSD, HDD, etc.)
   * Discuss how memory differs from storage.
6. * Define GPU and describe what it does.
   * What is VRAM?
   * What are pixels?
7. * Define Operating System (or System Software) and list the three that are most common.
8. * When working in an application, when do you save your work?
   * Describe the difference between “open” and “proprietary” file formats and how that plays into “digital obsolescence”.
9. * In what type of format is everything encoded to transfer data between connections of the internet? How does the information physically travel down a copper wire (Ethernet)? How do bits physically travel down a “glass wire”(fiber optic)?
10. * Define packets \[of information]. Discuss the importance of TCP.
    * Define bandwidth. How is the size of bandwidth described?
11. * What are modems and routers?
    * What is an Internet Service Provider (ISP)?
12. * Describe what the following are and how they are difference: HTML, CSS, and Javascript.