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How to download a range of bytes?

by Zeokat (Novice)
on Dec 26, 2007 at 22:56 UTC ( [id://659125]=perlquestion: print w/replies, xml ) Need Help??

Zeokat has asked for the wisdom of the Perl Monks concerning the following question:

Solution Manual Physics Of Semiconductor Devices S M Sze 3rd Editionpdf May 2026

If you are an Electrical Engineering student, a PhD researcher, or a device physicist, you know S. M. Sze’s Physics of Semiconductor Devices as the undisputed "bible" of the field. The 3rd edition, co-authored with Kwok K. Ng, remains the gold standard for understanding p-n junctions, MOSFETs, BJTs, and advanced optoelectronic devices.

However, anyone who has taken a graduate-level device physics course knows the struggle: If you are an Electrical Engineering student, a

If you are a TA or instructor, request access directly from the publisher (Wiley). If you are a student, ask your professor to post the odd-numbered problem solutions. The 3rd edition, co-authored with Kwok K

Today, we are discussing the elusive "Solution Manual" for this text. Where can you find it? How should you use it? And why is it so critical for mastering the subject? Published in 2006, the 3rd edition bridges classic physics (Shockley equations) and modern nanotechnology (short-channel effects, SOI). The end-of-chapter problems are designed not just for math practice, but to force you to derive fundamental limits of devices (e.g., calculating breakdown voltage or tunneling current). The PDF Dilemma While the original textbook is widely available in PDF format through institutional access (Springer/Wiley), the official instructor’s solution manual is a different beast. It is proprietary, intended solely for verified professors. If you are a student, ask your professor

Many 3rd edition problems are modified versions of classic 1st/2nd edition problems. If you can solve the depletion approximation for a one-sided step junction in the 2nd edition, you can solve it in the 3rd. The Verdict The Solution Manual for Physics of Semiconductor Devices (3rd Edition) is an invaluable tool—but it is a terrible crutch. If you simply copy answers from a PDF, you will fail your qualifying exams. Semiconductor physics is too intuitive; you need to feel the physics.

Search GitHub for "Sze solutions." Many PhD students have uploaded their hand-written homework solutions for the 3rd edition. These are often more useful than the dry official manual because they include commentary on common mistakes.

Find the manual, attempt the problem for 2 hours, then check the manual for the last 10% of the derivation. Have you found a reliable resource for Sze problem solutions? Or are you stuck on a specific BJT efficiency problem? Drop a comment below or join our EE student Discord. Let’s help each other avoid the "depletion region" of frustration.

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Re: How to download a range of bytes?
by eserte (Deacon) on Dec 26, 2007 at 23:27 UTC
    This seems to work:
    #!/usr/bin/perl -w use strict; use LWP::UserAgent; my $ua = LWP::UserAgent->new; my $url = 'http://localhost/...'; $ua->default_headers->push_header(Range => "bytes=1000-2000"); my $response = $ua->get($url); my $content = $response->content(); warn length($content); warn $content;
    To get the current content length of the object, you can do a HEAD before and look at the content-length header.
      The code works verrrrrrry good eserte. Big thanks. But new question arrive to my head, are there any way to know if the server have the abbility of "Accept-Ranges: bytes" ?? Thanks in advance.
        Try fetching with HEAD instead of GET to view the Accept* headers without getting the content itself

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