diff --git a/main.py b/main.py
index 6bd310f..27f58ec 100644
--- a/main.py
+++ b/main.py
@@ -1,31 +1,32 @@
 import bitutilities as bu
-import timeit
+
+
+def input_handler(first_register: bu.BasicRegister, second_register: bu.BasicRegister):
+    first_register, second_register = bu.align_registers(first_register, second_register)
+
+    print()
+    print(first_register)
+    print(second_register)
+
+    while True:
+        print()
+        match input("Choose the operation:\n[a]ddition, [s]ubtraction, [m]ultiplication, [d]ivision, [q]uit\n>>> "):
+            case "a":
+                print(f"Sum:\n{bu.binary_sum(first_register, second_register)}")
+            case "s":
+                print(f"Subtraction:\n{bu.binary_subtraction(first_register, second_register)}")
+            case "m":
+                pass
+            case "d":
+                pass
+            case "q":
+                exit()
+            case _:
+                print("Not an available operation, try again.")
 
 
 if __name__ == '__main__':
     reg: bu.BasicRegister = bu.BasicRegister(bu.get_memory("memory"))
-
-    print()
-    print("Register 1:")
-    print(reg)
-
-    print()
     reg2: bu.BasicRegister = bu.BasicRegister(bu.get_memory("more memory"))
 
-    print()
-    print("Register 2:")
-    print(reg2)
-
-    reg, reg2 = bu.align_registers(reg, reg2)
-
-    print()
-    sum_reg, carry = bu.binary_sum(reg, reg2, True)
-
-    print()
-    print("Sum & carry:")
-    print(sum_reg, carry)
-
-    print()
-    subtr_reg: bu.BasicRegister = bu.binary_subtraction_1_complement(reg, reg2)
-    print("Subtraction:")
-    print(subtr_reg)
+    input_handler(reg, reg2)