diff --git a/adafruit_ht16k33/matrix.py b/adafruit_ht16k33/matrix.py
old mode 100644
new mode 100755
index 2687a52..a9fa7ac
--- a/adafruit_ht16k33/matrix.py
+++ b/adafruit_ht16k33/matrix.py
@@ -31,18 +31,16 @@
 __version__ = "0.0.0-auto.0"
 __repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_HT16K33.git"
 
-class Matrix16x8(HT16K33):
-    """A double matrix or the matrix wing."""
+class Matrix8x8(HT16K33):
+    """A single matrix."""
     def pixel(self, x, y, color=None):
         """Get or set the color of a given pixel."""
-        if not 0 <= x <= 15:
+        if not 0 <= x <= 7:
             return None
         if not 0 <= y <= 7:
             return None
-        if x >= 8:
-            x -= 8
-            y += 8
-        return super()._pixel(y, x, color)
+        x = (x - 1) % 8
+        return super()._pixel(x, y, color)
 
     def __getitem__(self, key):
         x, y = key
@@ -52,26 +50,30 @@ def __setitem__(self, key, value):
         x, y = key
         self.pixel(x, y, value)
 
-class Matrix8x8(HT16K33):
-    """A single matrix."""
+class Matrix16x8(Matrix8x8):
+    """The matrix wing."""
     def pixel(self, x, y, color=None):
         """Get or set the color of a given pixel."""
-        if not 0 <= x <= 7:
+        if not 0 <= x <= 15:
             return None
         if not 0 <= y <= 7:
             return None
-        x = (x - 1) % 8
-        return super()._pixel(x, y, color)
-
-    def __getitem__(self, key):
-        x, y = key
-        return self.pixel(x, y)
+        if x >= 8:
+            x -= 8
+            y += 8
+        return super()._pixel(y, x, color)
 
-    def __setitem__(self, key, value):
-        x, y = key
-        self.pixel(x, y, value)
+class MatrixBackpack16x8(Matrix8x8):
+    """A double matrix backpack."""
+    def pixel(self, x, y, color=None):
+        """Get or set the color of a given pixel."""
+        if not 0 <= x <= 15:
+            return None
+        if not 0 <= y <= 7:
+            return None
+        return super()._pixel(x, y, color)
 
-class Matrix8x8x2(HT16K33):
+class Matrix8x8x2(Matrix8x8):
     """A bi-color matrix."""
     def pixel(self, x, y, color=None):
         """Get or set the color of a given pixel."""
@@ -86,14 +88,6 @@ def pixel(self, x, y, color=None):
             return super()._pixel(y, x) | super()._pixel(y + 8, x) << 1
         return None
 
-    def __getitem__(self, key):
-        x, y = key
-        return self.pixel(x, y)
-
-    def __setitem__(self, key, value):
-        x, y = key
-        self.pixel(x, y, value)
-
     def fill(self, color):
         """Fill the whole display with the given color."""
         fill1 = 0xff if color & 0x01 else 0x00
diff --git a/examples/ht16k33_matrix_simpletest.py b/examples/ht16k33_matrix_simpletest.py
index e420ecf..8656c07 100644
--- a/examples/ht16k33_matrix_simpletest.py
+++ b/examples/ht16k33_matrix_simpletest.py
@@ -17,6 +17,8 @@
 # Create the matrix class.
 # This creates a 16x8 matrix:
 matrix = matrix.Matrix16x8(i2c)
+# Or this creates a 16x8 matrix backpack:
+# matrix = matrix.MatrixBackpack16x8(i2c)
 # Or this creates a 8x8 matrix:
 #matrix = matrix.Matrix8x8(i2c)
 # Or this creates a 8x8 bicolor matrix: