diff --git a/Praktikum 2/PSD_Decoder.circ b/Praktikum 2/PSD_Decoder.circ
new file mode 100644
index 0000000..58d2a52
--- /dev/null
+++ b/Praktikum 2/PSD_Decoder.circ
@@ -0,0 +1,213 @@
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+ This file is intended to be loaded by Logisim-evolution v4.0.0(https://github.com/logisim-evolution/).
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diff --git a/Praktikum 2/PSD_Encoder.circ b/Praktikum 2/PSD_Encoder.circ
new file mode 100644
index 0000000..63186fe
--- /dev/null
+++ b/Praktikum 2/PSD_Encoder.circ
@@ -0,0 +1,170 @@
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+ This file is intended to be loaded by Logisim-evolution v4.0.0(https://github.com/logisim-evolution/).
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diff --git a/Praktikum 2/PSD_KarnaughMap.circ b/Praktikum 2/PSD_KarnaughMap.circ
new file mode 100644
index 0000000..14e06dc
--- /dev/null
+++ b/Praktikum 2/PSD_KarnaughMap.circ
@@ -0,0 +1,244 @@
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+
+ This file is intended to be loaded by Logisim-evolution v4.0.0(https://github.com/logisim-evolution/).
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