diff --git a/serial.py b/serial.py
new file mode 100644
index 0000000..cf7edfb
--- /dev/null
+++ b/serial.py
@@ -0,0 +1,7 @@
+'''Serialisation of data'''
+import csv
+
+with open('test.csv', newline='') as csvfile:
+    spamreader = csv.reader(csvfile, delimiter=' ', quotechar='|')
+    for row in spamreader:
+        print(', '.join(row))
diff --git a/test.csv b/test.csv
new file mode 100644
index 0000000..fba29af
--- /dev/null
+++ b/test.csv
@@ -0,0 +1 @@
+Peter, Hans, Otto
\ No newline at end of file
diff --git a/ui.py b/ui.py
index 3aa1787..6110495 100644
--- a/ui.py
+++ b/ui.py
@@ -1 +1,27 @@
 import tkinter as tk
+
+
+class Application(tk.Frame):
+    def __init__(self, master=None):
+        super().__init__(master)
+        self.master = master
+        self.pack()
+        self.create_widgets()
+
+    def create_widgets(self):
+        self.hi_there = tk.Button(self)
+        self.hi_there["text"] = "Hello World\n(click me)"
+        self.hi_there["command"] = self.say_hi
+        self.hi_there.pack(side="top")
+
+        self.quit = tk.Button(self, text="QUIT", fg="red",
+                              command=self.master.destroy)
+        self.quit.pack(side="bottom")
+
+    def say_hi(self):
+        print("hi there, everyone!")
+
+
+root = tk.Tk()
+app = Application(master=root)
+app.mainloop()