Welcome to the Monastery.

Please use code tags for your code snippets.

Is the above statement correct ????

That depends on what you want $clock to contain. If you want it to simply be the string FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF05, then the following should be sufficient:

$clock = 'FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF05';
[download]

If you try to print out the value of $clock in your code, you might get:

use warnings;
use strict;

my $clock = pack('H34','FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF05');
print "clock:$clock:\n";
for (split //, $clock) {
    print "$_:", ord $_, ":\n";
}
[download]

outputs (unprintable characters):

clock:\uffff\uffff\uffff\uffff\uffff\uffff\uffff\uffff\uffff\uffff\uff
+ff\uffff\uffff\uffff\uffff\uffff:
\uffff:255:
\uffff:255:
\uffff:255:
\uffff:255:
\uffff:255:
\uffff:255:
\uffff:255:
\uffff:255:
\uffff:255:
\uffff:255:
\uffff:255:
\uffff:255:
\uffff:255:
\uffff:255:
\uffff:255:
\uffff:255:
:5:
[download]

Take a look at pack.

Update: By the way, a more compact way to assign a value to $clock uses the "repetition operator" (see perlop). These 2 lines are equivalent:

$clock = 'FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF05';
$clock = 'F' x 32 . '05';
[download]

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.