diff --git a/README.rst b/README.rst
index 383b1cb..aaa33a7 100644
--- a/README.rst
+++ b/README.rst
@@ -73,7 +73,6 @@ adafruit_max7219.Matrix8x8 Example
 
       spi = busio.SPI(clk, MOSI=din)
       display = matrices.Matrix8x8(spi, cs)
-      display.rotation(1)    #change display direction
       while True:
           display.brightness(3)
 
@@ -125,14 +124,3 @@ Documentation
 =============
 
 For information on building library documentation, please check out `this guide <https://learn.adafruit.com/creating-and-sharing-a-circuitpython-library/sharing-our-docs-on-readthedocs#sphinx-5-1>`_.
-
-
-Additons
-=============
-
-1. Add rotation func
-
-.. code-block:: python
-
-    matrix = matrices.Matrix8x8(spi, cs)
-    matrix.rotation(2)
diff --git a/adafruit_max7219/matrices.py b/adafruit_max7219/matrices.py
index f32c127..955e050 100644
--- a/adafruit_max7219/matrices.py
+++ b/adafruit_max7219/matrices.py
@@ -6,11 +6,9 @@
 `adafruit_max7219.matrices.Matrix8x8`
 ====================================================
 """
-import time
 from micropython import const
 from adafruit_max7219 import max7219
 
-
 __version__ = "0.0.0-auto.0"
 __repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_MAX7219.git"
 
@@ -28,8 +26,8 @@ class Matrix8x8(max7219.MAX7219):
     :param ~digitalio.DigitalInOut cs: digital in/out to use as chip select signal
     """
 
-    def __init__(self, spi, cs, num=1):
-        super().__init__(8, 8, spi, cs, num=num)
+    def __init__(self, spi, cs):
+        super().__init__(8, 8, spi, cs)
 
     def init_display(self):
         for cmd, data in (
@@ -39,7 +37,7 @@ def init_display(self):
             (_DECODEMODE, 0),
             (_SHUTDOWN, 1),
         ):
-            self._write([cmd, data] * self.num)
+            self.write_cmd(cmd, data)
 
         self.fill(0)
         self.show()
@@ -60,20 +58,3 @@ def clear_all(self):
         Clears all matrix leds.
         """
         self.fill(0)
-
-    def display_str(self, data, delay=1):
-        """
-        Display string on led matrix by matrix length
-
-        :param str: string that can be of any length.
-        :param delay: transfer time from one screen to  another screen. default value is 1s
-
-        """
-        i = -1
-        for char in data:
-            i += 1
-            self.fill(0)
-            self.text(char, 1, 0)
-            self.show_char_position(i % self.num)
-            if i % self.num == self.num - 1:
-                time.sleep(delay)
diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index a665ed7..b0458f6 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -52,8 +52,6 @@
 _DIGIT0 = const(1)
 _INTENSITY = const(10)
 
-MAX7219_REG_NOOP = 0x0
-
 
 class MAX7219:
     """
@@ -68,7 +66,7 @@ class MAX7219:
     """
 
     def __init__(
-        self, width, height, spi, cs, *, baudrate=8000000, polarity=0, phase=0, num=1
+        self, width, height, spi, cs, *, baudrate=8000000, polarity=0, phase=0
     ):
 
         self._chip_select = cs
@@ -83,7 +81,6 @@ def __init__(
 
         self.width = width
         self.height = height
-        self.num = num
 
         self.init_display()
 
@@ -93,7 +90,6 @@ def init_display(self):
     def brightness(self, value):
         """
         Controls the brightness of the display.
-
         :param int value: 0->15 dimmest to brightest
         """
         if not 0 <= value <= 15:
@@ -112,7 +108,6 @@ def show(self, number=1, t_num=1):
     def fill(self, bit_value):
         """
         Fill the display buffer.
-
         :param int bit_value: value > 0 set the buffer bit, else clears the buffer bit
         """
         self.framebuf.fill(bit_value)
@@ -120,7 +115,6 @@ def fill(self, bit_value):
     def pixel(self, xpos, ypos, bit_value=None):
         """
         Set one buffer bit
-
         :param xpos: x position to set bit
         :param ypos: y position to set bit
         :param int bit_value: value > 0 sets the buffer bit, else clears the buffer bit
@@ -159,29 +153,3 @@ def rotation(self, direction):
         :param direction:set int to change display direction, value 0 (default), 1, 2, 3
         """
         self.framebuf.rotation = direction
-
-    def _write(self, data):
-        """
-        Send the bytes (which should comprise of alternating command, data values)
-        over the SPI device.
-
-        :param data: command collections
-        """
-
-        self._chip_select.value = False
-        with self._spi_device as my_spi_device:
-            my_spi_device.write(bytes(data))
-        self._chip_select.value = True
-
-    def show_char_position(self, position=0):
-        """
-        write data to the position that is one of multi led matrix
-
-        :param position: the position of matrix, value begin 0.
-
-        """
-        for ypos in range(8):
-            self._write(
-                [_DIGIT0 + ypos, self._buffer[ypos]]
-                + ([MAX7219_REG_NOOP, 0] * (position))
-            )
diff --git a/examples/max7219_disaplay_string_multi_matrix.py b/examples/max7219_disaplay_string_multi_matrix.py
deleted file mode 100644
index 930b49f..0000000
--- a/examples/max7219_disaplay_string_multi_matrix.py
+++ /dev/null
@@ -1,20 +0,0 @@
-# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
-# SPDX-License-Identifier: MIT
-
-
-import board
-import busio
-import digitalio
-from adafruit_max7219 import matrices
-
-clk = board.IO4
-din = board.IO2
-cs = digitalio.DigitalInOut(board.IO3)
-
-spi = busio.SPI(clk, MOSI=din)
-display = matrices.Matrix8x8(spi, cs, 4)
-display.framebuf.rotation = 1  # rotate screen
-
-display.clear_all()
-while True:
-    display.display_str("abc7568123456789asdfghj", 2)