diff --git a/OS/01/start.sh b/OS/01/start.sh
index 694c560..1006247 100755
--- a/OS/01/start.sh
+++ b/OS/01/start.sh
@@ -31,18 +31,53 @@ fi
 
 ### START
 
+start_device() {
+    echo "Starting device..."
+    python device.py &
+    DEVICE_PID=$!
+    echo "Device started as process $DEVICE_PID"
+}
+
+# Function to start server
+start_server() {
+    echo "Starting server..."
+    python server.py &
+    SERVER_PID=$!
+    echo "Server started as process $SERVER_PID"
+}
+
 # DEVICE
 
+# SERVER
+
+stop_processes() {
+    if [[ -n $DEVICE_PID ]]; then
+        echo "Stopping device..."
+        kill $DEVICE_PID
+    fi
+    if [[ -n $SERVER_PID ]]; then
+        echo "Stopping server..."
+        kill $SERVER_PID
+    fi
+}
+
+# Trap SIGINT and SIGTERM to stop processes when the script is terminated
+trap stop_processes SIGINT SIGTERM
+
+# Start device if DEVICE_START is True
 if [[ "$DEVICE_START" == "True" ]]; then
-    python device.py &
+    start_device
 fi
 
-# SERVER
-
+# Start server if SERVER_START is True
 if [[ "$SERVER_START" == "True" ]]; then
-    python server.py &
+    start_server
 fi
 
+# Wait for device and server processes to exit
+wait $DEVICE_PID
+wait $SERVER_PID
+
 # TTS, STT
 
 # (todo)