Transcript Document

ES 103.06 Lab I
Windows, Explorer, E-mail, FTP, news
User Applications
Virtual Machine Interface
OPERATING SYSTEMS
Physical Machine Interface
Hardware
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OPERATING SYSTEM: an interface between the user and the architecture
(implements a virtual machine that is –hopefully- easier to program than the raw hardware)
EX: provides
-
the file system
virtual memory
networking
CPU scheduling
time-sharing
Dos, Windows, Linux, Unix ...
Examples for operating systems
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DOS – Disk Operating System
The main use of DOS is the organization of data.
DIRECTORY STRUCTURE
Erkan
ES103
(folders)
lectures
(files)
Lecture1.doc
Lecture2.doc
Lecture3.doc
exams
CSE459
lectures
exams
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Today, (most) computers start with Windows:
Windows 2000, Windows XP
STARTING YOUR COMPUTER
Either CTRL+ALT+DEL to log on (2000),
Or password directly (XP)
desktop
Open
applications
icons
Recycle bin
(Trash)
language
START
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SHUTTING DOWN YOUR COMPUTER
LOG OFF - TURN OFF buttons/options
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Crashing computers
(if you have to resort to this, or sometimes
even harsher, methods…
CTRL+ALT+DEL
…give your computer ~60 sec. before
restarting, so that the spinning parts of your
computer stop)
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Use HELP whenever there is something wrong and you don’t know what to do!!!
Read TROUBLESHOOTING…
Windows Explorer
Drag and drop
Copy and paste
Cut and paste
To choose files:
SHIFT+click
CTRL +click
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Looking for files???
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SETTINGS AND CONTROL PANEL
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MY COMPUTER
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The Internet Age
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INTERNET = a series of computers networked together worldwide
1969 – US Department of Defense – developed a computer network for the military
ARPANET = Advance Research Projects Agency - Network
Today, there is no single owner of the internet !!!
Two (or more) computers connected together (for printing, etc purposes)
= LOCAL AREA NETWORK (LAN)
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NETWORKED COMPUTERS
Host Computers
Client Computers
Usually information providers
Eg. Your home computer
Need more disk space
Less processor power
Need faster connections
Less storage space
Usually make the connection through a MODEM
(modulator / demodulator)
PORTS : specific “post office windows” through which you wait in line &
collect the specific information requested (eg. e-mail)
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7 PORTS:
- email
- Usenet news
- Telnet
- FTP
- WAIS
- Gopher
- WWW
Inter-personal communication
(at least 1 sender and 1 recipient)
More like “information libraries”
MICROSOFT
OUTLOOK
EXPRESS
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E-MAIL ACCOUNT
Tools
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ISP : Internet Service Provider
eg after the Dial-up connection, your computer activates a Winsock
Winsock allows the computer to communicate with the outside world through:
TCP / IP : Transmission Control Protocol and Internet Protocol
1) IP address : like a phone #; defines a host machine or a gateway
#s can be hard to remember, therefore we also use DOMAIN NAMES
212.50.55.31
www.yeditepe.edu.tr
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2) PORT number :
eg.
like the # of each application
WWW PORT:
POP3 PORT:
SMTP PORT:
80
110
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IP address + PORT # = SOCKET
(DNS – Domain Name System :
Internet connection:
can give the domain name, and search the IP #)
IP 205.217.201.3port80
=http://www.arrl.org
URL – Uniform Resource Locator
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POP3 : Post Office protocol 3
Server running on host computer that provides you with incoming mail
SMTP : Simple Mail Transport Protocol
Another server on host computer that accepts E-mail
(like the streetcorner mailbox where you can drop in mail)
TO: receiver@domain
CC: another_receiver@another_domain
CC: carbon copy
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USENET :
A worldwide distributed discussion system
Consists of a set of newsgroups
ARTICLES or MESSAGES are posted
USENET IS NOT: -an organization
-a democracy
-fair
-a right
-a public utility
-an academic utility
-an advertising medium
-the Internet
-a software
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USENET is a set of people exchanging articles
It is a society, and you need to have certain SOCIAL SKILLS !!!
In either E-mail or the Usenet, remember to follow the
NETIQUETTE (the art of getting along with the other NETIZENS)
-Be calm with your statements
-Apologize
-Bow down to the ‘elders’
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Electronic Mail
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TELNET
A telecommunications software utility – allows you to access a remote computer
FROM START : Choose run
write
telnet yeditepe.edu.tr
Can read e-mail through e-mail reader (PINE)
Can talk to others on the system (TALK LOGIN)
(they may not accept to talk to you, however)
etc
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FTP – File Transfer Protocol
Telnet = allows you to connect to the remote conputer and
run a computer there
FTP
= you can connect to remote computer and
transfer files back and forth
START – choose run
write
ftp 212.50.57.30
cd
cd .
cd ..
change directory
mkdir
make directory
get filename.doc
(copy the file to your computer)
put filename.doc (copy the file to remote computer)
bye
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FTP Client Software: example - CuteFTP
Remote computer
Your computer
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LAB HOMEWORK:
1- Go to Bilgi Islem and get yourself an e-mail account opened, if you already haven’t
ask them to also give you some space for web page (username&password)
2- Subscribe to the ES103 mailing list
[email protected]
Don’t forget your Netiquette !!!
Give your name, section (ES103.06)
3- Find a Usenet newsgroup in your field (Electrical and Electronic Engineering)
Register and post your first message
4- Download a CuteFTP free demo version
Using the passwords given to you for webpage, and the CuteFTP,
create 2 directories
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