docs(dn): Simon Hu 10/11/2025 (#410)

Co-authored-by: Noahms12 <[email protected]>

Author: 1fHu

src/design_notebooks/2025fall/yh4970.md

@@ -1,12 +1,24 @@
 # Simon Hu - Design Notebook (Fall 2025)
 
+## Week 5 (Oct 6 - Oct 12)
+- Wrote Register file
+- Discussed and compared the register file with parnter
+- Tested Register file and passed all tests
+- All code uploaded (https://github.com/1fHu/ProcessorDesign.git)
 
 ## Week 4
-- Test register file
+- Wrote ALU model 
+- Revised ALU test file and test my module
+- Passed all tests
+- Learning register file
 
 ## Week 3 
-- Test Risc 16 Program Counter
-- Build ALU model with teammate
+- Revised Risc 16 Program Counter file
+- Added sign extention to immediate value before entering pc
+- Revised pc test file based on needed
+- Tested pc and passed all tests
+- Learning ALU model
+
 
 ## Week 2 (Sep 15- Sep 21)
 - Read Risc 16 datasheet