1. New Mexico Computer Science For All Abstraction in Life and Computer Science Maureen Psaila-Dombrowski

2. What is Abstraction? Abstraction  Ignoring some details or parts so that you can focus on what is important to you at that time.  As your interests change the amount of abstraction you need can change too. Levels of Abstraction  These are the levels or layers in your abstraction.  The layer in your abstraction includes things that can be grouped together in the same way.

3. Some Types of Abstraction Physical Abstraction ▫Levels - physical parts of an object. Modeling Abstraction ▫Levels - what you want to include in a model. Control Abstraction ▫Levels - how something is controlled Data Abstraction ▫Levels - some characteristic of the data and how you want to use it.

4. What? No Way! I never do that….. Yes you do… you are doing it right now! Everyone uses abstraction – otherwise …. Your brain automatically filters or abstracts ▫Sights ▫Sounds Your mind automatically changes levels of abstraction ▫Driving, walking ▫Looking for a friend in a crowd

5. Applying Abstraction in Everyday Life Abstraction  Simplification to what’s important.  Focus on the important part  Ignore the other parts until later, if at all Powerful!  Don’t waste time and energy  Make’s things manageable, doable  Then use decomposition to figure out the steps

6. Applying Abstraction in Everyday Life: Go to a Amusement Park

7. Abstraction: Go to a Amusement Park

8. Applying Abstraction: CAR

9. Driver Automotive Engineer Mechanic Car Parts Designer Materials Engineer Mechanical Engineer Physicist

10. Applying Abstraction: Modeling Driving a Car

11. CAR Accelerator Brake

12. Applying Abstraction: Modeling Driving a Car CAR Accelerator Brake Wipers Indicator Mirrors Gas Guage

13. One Last Abstraction: After learning about what is inside a computer, You realize that a computer can be abstracted as follows

14. Computer Programmer System Designer Average Person One Last Abstraction: Hardware Engineer

15. Computer Programmer Operating System Designer One Last Abstraction: YOU Before this Class Average Person

16. Computer Programmer Operating System Designer One Last Abstraction: YOU Before this Class YOU After this Class Average Person

17. Summary Abstraction - simplification, focus only on the important parts Levels of Abstraction - each level includes things that can be grouped together. You already use abstraction all the time You can apply abstraction to different things and for different reasons ▫Objects ▫Models