The CurrCon Java Applet displays prices on this
web page converted with today’s exchange rates into your local international currency,
e.g. Euros, US dollars, Canadian dollars, British Pounds, Indian Rupees…
CurrCon requires an up-to-date browser
and Java version 1.7 or later, preferably 1.8.0_25.
If you can’t see the prices in your local currency,
Troubleshoot. Use Chrome for best results.
PkWare version 14Last revised/verified:2012-05-23
creates various compression utilities including PKZIP for Windows (
) and Unix, including various types of
encryption as well. You can buy a DCL (Data Control Language)
library to do compression in your own programs. The catch is, it only handles
compression of an array of bytes, basically a GZIP class.
It cannot deal with the complex PKZIP archive format. The documentation on how to use
PKZIPc.exe, the command line version, is in a file called
Program Files\PKWARE\PKZIPC\PKZIPc.pdf. PKZIP.exe is the old DOS-command line compatible version. The gui
interface program is called PKZIPw.exe.
PKZIP can decompress zip, jar,
tar, gz, and tar.gz files.
PKZIP offer a free reader that can decompress any format of zip file, but not
compress them. This allows you to unzip even files compressed with PKWare proprietary
Pkware’s founder, Phil Katz wrote PkArc for DOS (Disk Operating System)
to compress files. It used the same format as SEA Arc. In the legal battle that
ensured, Katz was blocked from using the arc format, a major blow to computer
industry as a whole because the ruling broadly interpreted copyright to effectively
include algorithms and file formats. Katz’s code was in assembler and was much
faster than the high level SEA code. The issue was muddied because Katz had seen
SEA’s code. Katz then created the Zip file format and made it public domain so
competitors could use it to. It has become the defacto compression standard. It is
also used in Java jar and war files. Katz died in