diff --git a/src/main/dig/sequential/D_NAND.dig b/src/main/dig/sequential/D_NAND.dig
new file mode 100644
index 000000000..aceb51253
--- /dev/null
+++ b/src/main/dig/sequential/D_NAND.dig
@@ -0,0 +1,184 @@
+<?xml version="1.0" encoding="utf-8"?>
+<circuit>
+  <version>1</version>
+  <attributes/>
+  <visualElements>
+    <visualElement>
+      <elementName>In</elementName>
+      <elementAttributes>
+        <entry>
+          <string>Label</string>
+          <string>D</string>
+        </entry>
+      </elementAttributes>
+      <pos x="1240" y="440"/>
+    </visualElement>
+    <visualElement>
+      <elementName>In</elementName>
+      <elementAttributes>
+        <entry>
+          <string>Label</string>
+          <string>C</string>
+        </entry>
+      </elementAttributes>
+      <pos x="1240" y="640"/>
+    </visualElement>
+    <visualElement>
+      <elementName>Out</elementName>
+      <elementAttributes>
+        <entry>
+          <string>Label</string>
+          <string>Q</string>
+        </entry>
+      </elementAttributes>
+      <pos x="1580" y="480"/>
+    </visualElement>
+    <visualElement>
+      <elementName>Out</elementName>
+      <elementAttributes>
+        <entry>
+          <string>Label</string>
+          <string>~Q</string>
+        </entry>
+      </elementAttributes>
+      <pos x="1580" y="600"/>
+    </visualElement>
+    <visualElement>
+      <elementName>Testcase</elementName>
+      <elementAttributes>
+        <entry>
+          <string>Testdata</string>
+          <testData>
+            <dataString>C D Q ~Q
+C 1 1  0
+0 1 1  0
+0 0 1  0
+C 0 0  1
+0 0 0  1
+0 1 0  1
+</dataString>
+          </testData>
+        </entry>
+      </elementAttributes>
+      <pos x="1520" y="640"/>
+    </visualElement>
+    <visualElement>
+      <elementName>NAnd</elementName>
+      <elementAttributes/>
+      <pos x="1440" y="460"/>
+    </visualElement>
+    <visualElement>
+      <elementName>NAnd</elementName>
+      <elementAttributes/>
+      <pos x="1440" y="580"/>
+    </visualElement>
+    <visualElement>
+      <elementName>NAnd</elementName>
+      <elementAttributes/>
+      <pos x="1300" y="600"/>
+    </visualElement>
+    <visualElement>
+      <elementName>NAnd</elementName>
+      <elementAttributes/>
+      <pos x="1300" y="440"/>
+    </visualElement>
+  </visualElements>
+  <wires>
+    <wire>
+      <p1 x="1420" y="560"/>
+      <p2 x="1540" y="520"/>
+    </wire>
+    <wire>
+      <p1 x="1540" y="560"/>
+      <p2 x="1420" y="520"/>
+    </wire>
+    <wire>
+      <p1 x="1400" y="500"/>
+      <p2 x="1280" y="580"/>
+    </wire>
+    <wire>
+      <p1 x="1520" y="480"/>
+      <p2 x="1540" y="480"/>
+    </wire>
+    <wire>
+      <p1 x="1260" y="480"/>
+      <p2 x="1300" y="480"/>
+    </wire>
+    <wire>
+      <p1 x="1540" y="480"/>
+      <p2 x="1580" y="480"/>
+    </wire>
+    <wire>
+      <p1 x="1240" y="640"/>
+      <p2 x="1260" y="640"/>
+    </wire>
+    <wire>
+      <p1 x="1260" y="640"/>
+      <p2 x="1300" y="640"/>
+    </wire>
+    <wire>
+      <p1 x="1420" y="500"/>
+      <p2 x="1440" y="500"/>
+    </wire>
+    <wire>
+      <p1 x="1420" y="580"/>
+      <p2 x="1440" y="580"/>
+    </wire>
+    <wire>
+      <p1 x="1520" y="600"/>
+      <p2 x="1540" y="600"/>
+    </wire>
+    <wire>
+      <p1 x="1280" y="600"/>
+      <p2 x="1300" y="600"/>
+    </wire>
+    <wire>
+      <p1 x="1540" y="600"/>
+      <p2 x="1580" y="600"/>
+    </wire>
+    <wire>
+      <p1 x="1240" y="440"/>
+      <p2 x="1300" y="440"/>
+    </wire>
+    <wire>
+      <p1 x="1380" y="620"/>
+      <p2 x="1440" y="620"/>
+    </wire>
+    <wire>
+      <p1 x="1380" y="460"/>
+      <p2 x="1400" y="460"/>
+    </wire>
+    <wire>
+      <p1 x="1400" y="460"/>
+      <p2 x="1440" y="460"/>
+    </wire>
+    <wire>
+      <p1 x="1280" y="580"/>
+      <p2 x="1280" y="600"/>
+    </wire>
+    <wire>
+      <p1 x="1540" y="480"/>
+      <p2 x="1540" y="520"/>
+    </wire>
+    <wire>
+      <p1 x="1540" y="560"/>
+      <p2 x="1540" y="600"/>
+    </wire>
+    <wire>
+      <p1 x="1400" y="460"/>
+      <p2 x="1400" y="500"/>
+    </wire>
+    <wire>
+      <p1 x="1420" y="560"/>
+      <p2 x="1420" y="580"/>
+    </wire>
+    <wire>
+      <p1 x="1420" y="500"/>
+      <p2 x="1420" y="520"/>
+    </wire>
+    <wire>
+      <p1 x="1260" y="480"/>
+      <p2 x="1260" y="640"/>
+    </wire>
+  </wires>
+</circuit>
\ No newline at end of file
diff --git a/src/test/java/de/neemann/digital/integration/TestExamples.java b/src/test/java/de/neemann/digital/integration/TestExamples.java
index f8fe0926c..a474ee3ab 100644
--- a/src/test/java/de/neemann/digital/integration/TestExamples.java
+++ b/src/test/java/de/neemann/digital/integration/TestExamples.java
@@ -28,8 +28,8 @@ public class TestExamples extends TestCase {
      */
     public void testDistExamples() throws Exception {
         File examples = new File(Resources.getRoot().getParentFile().getParentFile(), "/main/dig");
-        assertEquals(190, new FileScanner(this::check).scan(examples));
-        assertEquals(89, testCasesInFiles);
+        assertEquals(191, new FileScanner(this::check).scan(examples));
+        assertEquals(90, testCasesInFiles);
     }
 
     /**