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  1. or download this
    # Create a buffer containing the binary representation
# of the number we want converted
...
# unpack to binary
my $bin = unpack("B*", $packed);
print "$bin\n";
  2. or download this
    ---
print map { my ($m)=1<<hex($_)&11?' ':'';
$m.=substr('AHJPacehklnorstu',hex($_),1) }
split //,'2fde0abe76c36c914586c';