manages the resources of a computer system and makes its operations more efficient and effective.
- programming languages are necessary because computers work with binary data. It is difficult, and error prone to write programs in binary.
Translators are of two types:
translates one instruction at a time
useful when small programs to be run only once or few times
translates complete program at a time
it is a two stage process
useful for larger programs that are to be run number of times
- enable people to write software to develop applications.
- enable people to solve a problem that cannot be handled by the off-the-shelf application software.
- Ex: COBOL, BASIC, FORTRAN, PASCAL, C, C++, Assembly language, ..
- Generations of languages
1st generation: Machine language
2nd generation: Assembly language
3rd generation: procedural languages (high-level)
4th generation: non-procedural languages (very high-level)
Ex: Twisted pair, coaxial cable, fiber optics, microwave transmission, satellite transmission, and wireless transmission.
- it converts digital signal it analog signal at the sending end and converts analog signal to digital signal at the receiving end.
- usually privately owned
- covers a limited geographic area
- frequently used software can be shared - file-server environment, client-server environment
- Hardware Resource sharing - sharing a printer
- geographic in scope
- public WAN companies include common carriers such as telephone companies.
Introduction to MS Windows -File Manager and NotePad Editor
Purpose: To acquire basic skills on how
to work with Windows 3.1 Operating System and how to prepare
a document using NotePad Editor.
What is the Internet ?
Purpose: To introduce
what the Internet is and to learn some
Purpose: To learn who is using the Internet, what they do with it and where they live
Purpose: To learn how hosts on the Internet are individually identified
uk us ca au fr it dr zw
com - A commercial company (IBM, Reebok) edu - A school or University in the U.S. gov - A government agency mil - A branch of the military org - A not-for-profit organization net - An organization involved with managing the Internet
rutgers microsoft pizzahut planetreebok
snoopy cs www eng311pc4 pegasus
pegasus.rutgers.edu andromeda.rutgers.edu www.microsoft.com lethe.leeds.ac.uk www.whitehouse.gov www.planetreebok.com
Host Name IP Address -------------------- -------------- pegasus.rutgers.edu 126.96.36.199 andromeda.rutgers.edu 188.8.131.52 www.microsoft.com 184.108.40.206 lethe.leeds.ac.uk 220.127.116.11 www.whitehouse.gov 18.104.22.168 www.planetreebok.com 22.214.171.124
http ftp gopher mailto
http://pegasus.rutgers.edu/~holowcza/index.htmlHTTP Protocol. Host name is
pegasus.rutgers.eduand file is
ftp://ftp.std.com/obi/William.Butler.Yeats/Yeats/BalloonFTP Protocol. Host name is
ftp.std.comand the file is
gopher://stis.nsf.govGopher Protocol. Host name is stis.nsf.gov and the root Gopher menu will be shown.
|This Page you're reading now||
|The White House||
|The CIMIC Home page||
|Rich Holowczak's Home Page||
|CD-World - A Compact Disk mail order company||
|Boyz 2 Men Fan Club||
|The NASA Home Page||
|The Library of Congress||
|Function||How to Do It|
|Start the Netscape Program||
|Go to a new Web Page||
|Follow a HyperText Link||Click on the underlined words.|
|Back up to the Previous Page||
|Save a WWW Page to a File||
|Print a WWW Page||
|Change Netscape's Preferences||
Purpose: To learn how to search the WWW using a variety of search engines.
JASONin the field provided.
Purpose: To learn some features of Netscape application.
|Function||How to Do It|
|To Create a new Netscape Window||
|To Open a Specific File on the Netscape|| Sometimes we want to open an HTML file that does not
have an http address.
|To Save an HTML File that is being viewed on Netscape Window|| Sometimes we want to save interesting HTML file as our own
file for future use.
|To preview an HTML printed page on Screen|| Sometimes we want to preview the printed page on
the screen before we send the page to the printer.
|To print an HTML page without previewing it first on the screen||
|To open an HTML page when you know its URL address||
|To close the current Netscape window||
|To exit from the Netscape application||
|To go back to the previously viewed page||
|To display the next page||
|To go to or display the home page||
|To change the home page default||
|Look at the "Source Code" for an HTML page||
|Saving an Image to a file||
|Changing the Displayed Font Size||
|Adding a URL to the Bookmark file|| When browsing around the Web, you will
come across Web sites that you would like
to re-visit from time to time. Most Web
browsers, including Netscape, can create
a "Bookmark" for later reference. To
create a bookmark:
|Deleting a bookmark||
|To do a search on the internet||