diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index b4c4aa9..c359e63 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -13,7 +13,7 @@
             "state": {
               "type": "markdown",
               "state": {
-                "file": "UNB/Year 5/Semester 1/HIST1001/In class notes.md",
+                "file": "UNB/Year 5/Semester 1/CS3113/In class notes.md",
                 "mode": "source",
                 "source": false
               }
@@ -85,7 +85,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "UNB/Year 5/Semester 1/HIST1001/In class notes.md",
+                "file": "UNB/Year 5/Semester 1/CS3113/In class notes.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -102,7 +102,7 @@
             "state": {
               "type": "outgoing-link",
               "state": {
-                "file": "UNB/Year 5/Semester 1/HIST1001/In class notes.md",
+                "file": "UNB/Year 5/Semester 1/CS3113/In class notes.md",
                 "linksCollapsed": false,
                 "unlinkedCollapsed": true
               }
@@ -125,7 +125,7 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "UNB/Year 5/Semester 1/HIST1001/In class notes.md"
+                "file": "UNB/Year 5/Semester 1/CS3113/In class notes.md"
               }
             }
           }
@@ -149,8 +149,10 @@
   },
   "active": "a06cabd352081cbd",
   "lastOpenFiles": [
-    "UNB/Year 5/Semester 1/HIST1451/In class notes.md",
     "UNB/Year 5/Semester 1/HIST1001/In class notes.md",
+    "UNB/Year 5/Semester 1/CS3113/In class notes.md",
+    "UNB/Year 5/Semester 1/CS3113",
+    "UNB/Year 5/Semester 1/HIST1451/In class notes.md",
     "UNB/Year 5/Semester 1/HIST1001",
     "UNB/Year 5/Semester 1/HIST1451",
     "UNB/Year 5/Semester 1",
diff --git a/UNB/Year 5/Semester 1/CS3113/In class notes.md b/UNB/Year 5/Semester 1/CS3113/In class notes.md
new file mode 100644
index 0000000..dce1417
--- /dev/null
+++ b/UNB/Year 5/Semester 1/CS3113/In class notes.md	
@@ -0,0 +1,24 @@
+## Convert numbers to binary
+Number in decimal: 53.7
+### Decimal conversion
+
+| Calculation | Remainder/Binary |
+| ----------- | ---------------- |
+| 53 / 2 = 26 | 1                |
+| 26 / 2 = 13 | 0                |
+| 13 / 2 = 6  | 1                |
+| 6 / 2 = 3   | 0                |
+| 3 / 2 = 1   | 1                |
+| 1 / 2 = 0   | 1                |
+So in binary 110101, as the order is in reverse of the decimals
+### Fraction Conversion
+
+| Calculation   | Non Decimal Portion/Binary |
+| ------------- | -------------------------- |
+| 0.7 x 2 = 1.4 | 1                          |
+| 0.4 x 2 = 0.8 | 0                          |
+| 0.8 x 2 = 1.6 | 1                          |
+| 0.6 x 2 = 1.2 | 1                          |
+| 0.2 x 2 = 0.4 | 0                          |
+And so on.. so the fraction would be .10110, with 0110 repeating infinitely
+So the final number would be 110101.10110...
\ No newline at end of file