Add DSP and Cryptography sections.

Edit Electronics Fundamentals

README.md

@@ -5,16 +5,20 @@ In order to assist beginners, steps have been taken to create a roadmap that is
 
 If you think that this map can be improved in anyway, please start an issue or pull request. I’ll be maintaining and updating this repository frequently. The source file is created using [Microsoft Visio](https://office.com/visio).
 
-![Embedded Systems Engineering Roadmap](https://github.com/m3y54m/Embedded-Engineering-Roadmap/assets/1549028/2558c78e-a933-4064-ad5e-e85086539abc)
+![Embedded Systems Engineering Roadmap](https://github.com/m3y54m/Embedded-Engineering-Roadmap/releases/download/Rev.A-2023-07-26/Embedded-Engineering-Roadmap.png)
 
 ## History
 
-The idea of creating this roadmap came from a [roadmap](https://github.com/vazeri/Embedded-Engineering-RoadMap-2018) designed by [vazeri](https://github.com/vazeri) which was not updated for years.
-I took that idea and changed the structure of the roadmap, improved it, and draw it using Microsoft Visio 2019. Now it is completely a different thing.
+The idea of creating this roadmap came from a [roadmap](https://github.com/vazeri/Embedded-Engineering-RoadMap-2018) designed by [vazeri](https://github.com/vazeri) which was well designed but not updated for years.
+I took that idea and changed the structure of the roadmap and tried to improve it. The initial results can be accessed in [m3y54m / Embedded-Engineering-Roadmap-Archived](https://github.com/m3y54m/Embedded-Engineering-Roadmap-Archived) which is now archived. Early versions of the roadmap were created using [Balsamiq Wireframes](https://balsamiq.com) which were not suitable for these types of diagrams. So I decided to use Microsoft Visio 2019 and redrew the whole diagram with it.
 
 ## Copyright
 
-This work is licensed under a [Creative Commons Attribution-ShareAlike 4.0 International License](https://creativecommons.org/licenses/by-sa/4.0/).
+This work is licensed under a [Creative Commons Attribution-ShareAlike 4.0 International License](https://creativecommons.org/licenses/by-sa/4.0/) which means that you are free to **share** or **adapt** this work under the following terms:
+
+**Attribution** — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
+
+**ShareAlike** — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original. 
 
 ## Acknowledgement