An instance of the default implementation of the AsciiCodec.
This instance provides a convenient access to the most common ASCII use cases.
Examples:
var encoded = ASCII.encode("This is ASCII!");
var decoded = ASCII.decode([0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73,
0x20, 0x41, 0x53, 0x43, 0x49, 0x49, 0x21]);