diff --git a/Writerside/images/image_80.png b/Writerside/images/image_80.png
new file mode 100644
index 0000000..b5cd0e1
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diff --git a/Writerside/images/image_81.png b/Writerside/images/image_81.png
new file mode 100644
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diff --git a/Writerside/images/image_82.png b/Writerside/images/image_82.png
new file mode 100644
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diff --git a/Writerside/in.tree b/Writerside/in.tree
index acdc660..d463bf1 100644
--- a/Writerside/in.tree
+++ b/Writerside/in.tree
@@ -5,23 +5,26 @@
 <instance-profile id="in"
                  name="Mitschriften David"
                  start-page="03_Betriebssysteme_heute.md">
-    <toc-element toc-title="Betriebssysteme">
-        <toc-element topic="03_Betriebssysteme_heute.md"/>
-        <toc-element topic="04_Betriebssystemkerne.md"/>
-        <toc-element topic="05_prozesszustaende.md"/>
-        <toc-element topic="06_prozessstruktur.md"/>
-    </toc-element>
-    <toc-element toc-title="OOAD">
-        <toc-element topic="IntroductionOOAD.md"/>
-        <toc-element topic="SoftwareProcesses.md"/>
-        <toc-element topic="ImplementingForMaintainability.md"/>
-        <toc-element topic="DesigningForMaintainability.md"/>
-    </toc-element>
-    <toc-element toc-title="Rechnerarchitektur">
-        <toc-element topic="Historie.md"/>
-        <toc-element topic="Prozessorkonzepte.md">
-            <toc-element topic="MU0Rechner.md"/>
-            <toc-element topic="MU1Rechner.md"/>
+    <toc-element toc-title="2. Semester">
+        <toc-element toc-title="Betriebssysteme">
+            <toc-element topic="03_Betriebssysteme_heute.md"/>
+            <toc-element topic="04_Betriebssystemkerne.md"/>
+            <toc-element topic="05_prozesszustaende.md"/>
+            <toc-element topic="06_prozessstruktur.md"/>
+        </toc-element>
+        <toc-element toc-title="OOAD">
+            <toc-element topic="IntroductionOOAD.md"/>
+            <toc-element topic="SoftwareProcesses.md"/>
+            <toc-element topic="ImplementingForMaintainability.md"/>
+            <toc-element topic="DesigningForMaintainability.md"/>
+        </toc-element>
+        <toc-element toc-title="Rechnerarchitektur">
+            <toc-element topic="Historie.md"/>
+            <toc-element topic="Prozessorkonzepte.md">
+                <toc-element topic="MU0Rechner.md"/>
+                <toc-element topic="MU1Rechner.md"/>
+            </toc-element>
         </toc-element>
     </toc-element>
+
 </instance-profile>
\ No newline at end of file
diff --git a/Writerside/topics/OOAD/ImplementingForMaintainability.md b/Writerside/topics/OOAD/ImplementingForMaintainability.md
index 24b606b..5534f6b 100644
--- a/Writerside/topics/OOAD/ImplementingForMaintainability.md
+++ b/Writerside/topics/OOAD/ImplementingForMaintainability.md
@@ -205,6 +205,8 @@ void printDetails(double outstanding){
 
 - Ein Freund eines Freundes ist ein Fremder
 
+![image_82.png](image_82.png)
+
 - Minimiere den Grad von Interdependencies
 
 ![image_53.png](image_53.png)
diff --git a/Writerside/topics/RA/MU0Rechner.md b/Writerside/topics/RA/MU0Rechner.md
index a75a267..8ca791c 100644
--- a/Writerside/topics/RA/MU0Rechner.md
+++ b/Writerside/topics/RA/MU0Rechner.md
@@ -146,6 +146,7 @@
   → 16 Befehle möglich
 
 ## MU0-Steuerlogik (_Kontroll-Logik_)
+Opcode: 4Bits, Adresse: 12Bits
 ![image_34.png](image_34.png)
 
 ### Fetchen
diff --git a/Writerside/topics/RA/MU1Rechner.md b/Writerside/topics/RA/MU1Rechner.md
index f8b1607..f7fc9e2 100644
--- a/Writerside/topics/RA/MU1Rechner.md
+++ b/Writerside/topics/RA/MU1Rechner.md
@@ -16,6 +16,7 @@
 ![image_54.png](image_54.png)
 
 ### Grundfunktionen MU1-ALU
+_Im Praktikum wird nur erwartet, dass Funktion bekannt ist, nicht bspw FA, FIA, etc._
 - FA: Funktion (0, A) (also eig. F0A)
 - FB: Funktion (0, B)
 - FIA: Funktion (Inverter, A)
@@ -72,10 +73,12 @@
     - PC wird über ALU um 1 erhöht
 
 ![image_59.png](image_59.png)
+![image_80.png](image_80.png)
 
 ### Befehl LDA (Laden des AKK aus Speicher)
 - Zwei Takte
 - ![image_60.png](image_60.png)
+- ![image_81.png](image_81.png)
 
 ### Zustandsbeschreibung des Ladebefehls
 ![image_61.png](image_61.png)