diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 45f221f..f2a938b 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -6,7 +6,7 @@ repos:
       - name: check YAML format
         id: yamllint
   - repo: https://github.com/psf/black
-    rev: 22.1.0
+    rev: 22.3.0
     hooks:
       - name: re-format with black
         id: black
diff --git a/readchar/key.py b/readchar/key.py
index 865427f..33cc87d 100644
--- a/readchar/key.py
+++ b/readchar/key.py
@@ -2,7 +2,7 @@
 LF = "\x0d"
 CR = "\x0a"
 ENTER = "\x0d"
-BACKSPACE = "\x08"
+BACKSPACE = "\x7f"
 SUPR = ""
 SPACE = "\x20"
 ESC = "\x1b"
diff --git a/readchar/readchar.py b/readchar/readchar.py
index 8aa352a..c8869e0 100644
--- a/readchar/readchar.py
+++ b/readchar/readchar.py
@@ -17,46 +17,42 @@
     raise NotImplementedError("The platform %s is not supported yet" % sys.platform)
 
 
-if sys.platform in ("win32", "cygwin"):
+if sys.platform in ("win32", "cygwin"):  # noqa: C901
     #
-    # Windows uses scan codes for extended characters. The ordinal returned is
-    # 256 * the scan code.  This dictionary translates scan codes to the
-    # unicode sequences expected by readkey.
+    # Windows uses scan codes for extended characters. This dictionary translates
+    # scan codes to the unicode sequences expected by readkey.
     #
     # for windows scan codes see:
     #   https://msdn.microsoft.com/en-us/library/aa299374
     #      or
     #   http://www.quadibloc.com/comp/scan.htm
     xlate_dict = {
-        13: key.ENTER,
-        27: key.ESC,
-        15104: key.F1,
-        15360: key.F2,
-        15616: key.F3,
-        15872: key.F4,
-        16128: key.F5,
-        16384: key.F6,
-        16640: key.F7,
-        16896: key.F8,
-        17152: key.F9,
-        17408: key.F10,
-        22272: key.F11,
-        34528: key.F12,
-        7680: key.ALT_A,
+        59: key.F1,
+        60: key.F2,
+        61: key.F3,
+        62: key.F4,
+        63: key.F5,
+        64: key.F6,
+        65: key.F7,
+        66: key.F8,
+        67: key.F9,
+        68: key.F10,
+        133: key.F11,
+        134: key.F12,
         # don't have table entries for...
         # CTRL_ALT_A, # Ctrl-Alt-A, etc.
         # CTRL_ALT_SUPR,
-        # CTRL-F1
-        21216: key.INSERT,
-        21472: key.SUPR,  # key.py uses SUPR, not DELETE
-        18912: key.PAGE_UP,
-        20960: key.PAGE_DOWN,
-        18400: key.HOME,
-        20448: key.END,
-        18432: key.UP,  # 72 * 256
-        20480: key.DOWN,  # 80 * 256
-        19200: key.LEFT,  # 75 * 256
-        19712: key.RIGHT,  # 77 * 256
+        # CTRL_ALT_A, .., etc.
+        82: key.INSERT,
+        83: key.SUPR,  # key.py uses SUPR, not DELETE
+        73: key.PAGE_UP,
+        81: key.PAGE_DOWN,
+        71: key.HOME,
+        79: key.END,
+        72: key.UP,
+        80: key.DOWN,
+        75: key.LEFT,
+        77: key.RIGHT,
     }
 
     def readkey(getchar_fn=None):
@@ -69,13 +65,14 @@ def readkey(getchar_fn=None):
                 a = ord(ch)
                 if a == 0 or a == 224:
                     b = ord(msvcrt.getch())
-                    x = a + (b * 256)
-
                     try:
-                        return xlate_dict[x]
+                        return xlate_dict[b]
                     except KeyError:
                         return None
-                    return x
+                elif a == 8:
+                    return key.BACKSPACE
+                elif a == 13:
+                    return key.ENTER
                 else:
                     return ch.decode()
 
diff --git a/test.py b/test.py
index d78b18f..7af90f7 100644
--- a/test.py
+++ b/test.py
@@ -25,6 +25,8 @@
     readchar.key.F10: "F10",
     readchar.key.F12: "F12",
     readchar.key.ALT_A: "ALT_A",
+    readchar.key.BACKSPACE: "BACKSPACE",
+    readchar.key.ENTER: "ENTER",
 }
 
 while True: