diff --git a/Lesson_4/task1.py b/Lesson_4/task1.py
index 7bccbd2..bfdafa1 100644
--- a/Lesson_4/task1.py
+++ b/Lesson_4/task1.py
@@ -5,34 +5,42 @@
 # Return codes:
 # 0 - OK
 
-import platform, psutil
+import platform, psutil, os, serial.tools.list_ports
+
+def getValue(checkedValue):
+	if checkedValue:
+		return "yes"
+	else:
+		return "no"
+
+def printList(names, values):
+	for i in range(len(names)):
+		print(chr(ord("a") + i) + ") " + names[i] + " " + "[" + getValue(values[i]) + "]")
+	print("y) Proceed")
+
+def writeData(file, name, code):
+	file.write(name + ": " + eval(code) + "\n")
+
+names = ["CPU", "Architecture", "CPU Family", "RAM", "Operating system", "Disk usage", "Serial ports"]
+data = [False] * len(names)
+code = ["platform.processor()", "str(platform.architecture())", "platform.machine()", "str(psutil.virtual_memory())", "os.name", "str(psutil.disk_usage(\".\"))", "str(serial.tools.list_ports.comports())"]
 
-data = [False,False,False,False]
 selection = None
 while True:
-	selection = input("a) CPU [" + str(data[0]) + "]\nb) RAM [" + str(data[1]) + "]\nc) Architecture [" + str(data[2]) + "]\nd) CPU Family [" + str(data[3]) + "]\ny) Proceed\n")
+	printList(names, data)
+	selection = input()
 	if selection == "y":
 		break
-	if not len(selection) == 1 or ord(selection) < ord("a") or ord(selection) > ord("d"):
+	if not len(selection) == 1 or ord(selection) < ord("a") or ord(selection) >= (ord("a") + len(names)):
 		print("Invalid selection.")
 		continue
 	number = ord(selection) - ord("a")
 	data[number] = not data[number]
 
-anythingTrue = False
-if data[0] or data[1] or data[2] or data[3]:
-	anythingTrue = True
+file_out = open("data.txt", "w")
 
-if anythingTrue:
-	file_out = open("data.txt", "w")
+for i in range(len(data)):
+	if data[i]:
+		writeData(file_out, names[i], code[i])
 
-	if data[0]:
-		file_out.write("CPU: " + platform.processor() + "\n")
-	if data[1]:
-		file_out.write("RAM: " + str(psutil.virtual_memory()) + "\n")
-	if data[2]:
-		file_out.write("Architecture: " + str(platform.architecture()) + "\n")
-	if data[3]:
-		file_out.write("CPU family: " + platform.machine() + "\n")
-
-	file_out.close()
+file_out.close()