Fixed spelling mistakes

register.py

@@ -15,14 +15,14 @@ class Register:
             bits = self.n_bits
         return value & ((1 << bits) - 1)
 
-    def trucate(self):
+    def truncate(self):
         self.value = self.truncate_val(self.value)
 
     def set(self, value):
         if value < 0:
             self.value = self.truncate_val(abs(value), self.n_bits - 1)
             self.negate()
-        self.trucate()
+        self.truncate()
 
     def get(self):
         return self.value
@@ -47,7 +47,7 @@ class Register:
         return "{} ({})".format(self, self.n_bits)
 
 
-class Acumulator(Register):
+class Accumulator(Register):
     negative_flag = False
     zero_flag = False
     carry_flag = False
@@ -72,7 +72,7 @@ class Acumulator(Register):
         self.value += register.value
         if self.value.bit_length() > self.n_bits:
             self.carry_flag = True
-            self.trucate()
+            self.truncate()
         self.set_flags()
 
     def sub(self, register: Register):