byte BitRead = 0;
        byte ValRead = 0;

        private byte[]  And = new byte[] { 0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F, 0xFF };
        private byte[] IAnd = new byte[] { 0xFF, 0xFE, 0xFC, 0xF8, 0xF0, 0xE0, 0xC0, 0x80, 0x00 };

        public byte ReadBit(byte Bits)
        {
            Bit = 0;
            if (BitRead > 7)
            { BitRead -= 8; if (BitRead != 0) Bit = (byte)((ValRead << BitRead) & And[Bits]);
                else Bit = 0; ValRead = (byte)stream.ReadByte();  }
            Bit = (byte)((Bit | (ValRead >> (8 - BitRead - Bits))) & And[Bits]);
            BitRead += Bits;
            ValRead = (byte)((byte)(ValRead << BitRead) >> BitRead);
            return Bit;
        }