docs(dn):Hongtai_Apr_21_2025 (#360)

Author: HongtaiDu

src/design_notebooks/2025spring/hd2609.md

@@ -35,6 +35,25 @@ This week was spent on clearifying my misunderstanding about register file via m
 
 ## Week of 17 March 2025
 Project Work:
-  * I finished register file in verilog and updated it to out github [link](https://github.com/Noahms12/RiSC-16-project).
+  * I finished register file in verilog and updated it to our github [link](https://github.com/Noahms12/RiSC-16-project).
 
 This week was spent on coding the resigter file. In my team, each person works on different part of the chip. Since I finished register file, I will decide what to work on till next team meeting.
+
+## Week of 31 March 2025
+Project Work:
+  * As discussed by team, I plan to work on program counter of this chip. 
+
+This week was spent on understanding the funcionality of program counter. I have not started coding yet becuase I have one midterm this week.
+
+## Week of 7 April 2025
+Project Work:
+  * I finished most of the functionality of program counter and uploaded them on our github [link](https://github.com/Noahms12/RiSC-16-project).
+  * I coded pc + 1, pc + immediate value functionality. However, it was difficult to understand how Jalr instruction works in the chip. 
+
+This week was spent on coding the program counter. I will discuss Jalr instruction with my team members and update my code next week.
+
+## Week of 14 April 2025
+Project Work:
+  * I finished coding for program counter and uploaded them on our github [link](https://github.com/Noahms12/RiSC-16-project). I added the variable for Jalr instruction and added default case for switch statement, which is used to receive the bit value from MUXpc_sel.
+
+This week was spent on fixing the code of the program counter. Last week, I did not successfully made a pull request to the github repo, but we fix it this week. Our team plan to discuss the next step of our project next week.