BU4035 Web Systems and E-Commerce

02/01/2007

TODAY'S MENU

1) Review last class

2) Project Explanation- C++ Web Tutor:-We are going to use front page

3) Problems and Obstacles

4) Demo other sites.

5) Book References

Learning: Web, System, and E comm.

Question:What is web?

Question: What is System (web/operating system)?

Answer:Two operating systems are:Windows, Unix (Linux)

Question: What are the servers that we know?

Answer: One is called IISR web server, and another is  Apach web server.

Question: What Language Unix has been written?

Answer: UNIX was originally developed at Bell Laboratories as a private research project by a small group of people starting in 1969. This group had experience with a number of different operating systems research efforts in the 1970's. The goals of the group were to design an operating system to satisfy the following objectives:

• Simple and elegant

• Written in a high level language rather than assembly language

• Allow re-use of code

Typical vendor operating systems of the time were extremely large and all written in assembly language. UNIX had a relatively small amount of code written in assembly language (this is called the kernel) and the remaining code for the operating system was written in a high level language called C.

The group worked primarily in the high level language in developing the operating system. As this development continued, small changes were necessary in the kernel and the language to allow the operating system to be completed. Through this evolution the kernel and associated software were extended until a complete operating system was written on top of the kernel in the language C.

In UNIX because the C language was written to be used to implement an operating system rather than a traditional "input-processing-output" application, use of these sophisticated features is quite easily done from the C language without writing any assembly language.

In addition, the documentation for these sophisticated features is in the same format and location as the documentation for the normal application calls.

When UNIX was distributed, users could write applications in C and easily make use of all of the operating system facilities. This allowed application developers to quickly develop much more sophisticated applications using these facilities.

What is written in HTML?

What language is Windows  written in?   Windows is written in C.

http://discuss.fogcreek.com/joelonsoftware/default.asp?cmd=show&ixPost=28914

Who wrote LINUX?  Linux was written by Linus Torvalds.

LINUX is an OPEN SOURCE operating system.  This means that the source code (programming) of the Kernel (heart of the operating system) must not be hidden from anyone.   Anyone with the desire and some programming knowledge can have access to the LINUX source code and can write software to interact with it.

LINUX is written in C/C++.

What does GNU stand for?   It stands for GNU- G means GNU N means- Not U means- UNIX.  It is a recursive acronym the letters in the acronym refers to itself.

** If you write one recursive program and paste it to your website (gallery or research) and show it to the class, you will get points.

Why is UNIX called UNIX?  In 1970 the project was named UNICS, short for Uniplexed Information and Computing System. 

One of the first structured operating systems available was called MULTICS.  UNIX came about by pruning MULTICS code and making it more portable.

So why do we call the programming language C?  Its the programming language that came after BPCL. 

Dr. Ebrahimi is on top!!

               Of Search Engines

I want you to learn the 10 Commandments on page 695 of the Text.

FrontPage is easy to use, but it generates a lot of garbage in the HTML code.

Why is garbage bad in your HTML code?   It creates a lot of overhead and can push you over transfer limits.  You should be clean and learn the HTML code itself.

Every letter is one byte, every space is one byte.  A byte is 16 bits now, it used to be 8 bits.

Everyone in this class should know about search program.

Y2K cost more than Three Trillion Dollars!!

TO code a color in HTML You use varying degrees of Red Green and Blue.   Each color's intensity is denoted in a two digit code that goes from 00 to FF

White is              RED    GREEN    BLUE

#FFFFFF   =        FF        FF            FF

There are four ways you can say C++

Read the chapter introductions in the text and put them in your tutorial.  Publish it to your class management website.

Stop drinking soda and buy a domain name.