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COMP101 –
Exploring Multimedia and Internet Computing
LA1B (Fri 11:00 – 12:50)
TA: Jackie Lo
TA Introduction
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Name: Jackie Lo
Office: 4213A
Phone:2358 8837
Email: [email protected]
Web: http://www.cse.ust.hk/~jackielo
Office hour: By appointment
Lab: LA1B (take attendance)
Lecture Review
 Hardware VS Software
 Hardware: Computer equipment you can
see and touch
 Software: Instructions that controlling
the computer equipment
Lecture Review
 Computers use binary for calculation
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Each no. = a sequence of 0’s and 1’s
Each digit = bit
8bits (b) = 1 Byte (B)
1,024B = 1kB
1,048,576B = 1024kB = 1MB
1,073,741,824B = 1024MB = 1GB
1,099,511,627,776B = 1024GB = 1TB
Lecture Review
 For n bits, no. of representation = 2n
 E.g. For 2 bits,
 Possible representation: 00, 01, 10, 11
 No. of representation: 4 = 22
 Hardware Component
 Any questions?
Lab Notes
 Email: Electronic Mail
 Normal mail but they're in digital format.
 Email Address: {username}@{domainname}
 E.g. [email protected], [email protected]
 Mailing List
 list of people (email address) who subscribe
to a periodic mailing distribution on a
particular topic.
 E.g. [email protected]
Lab Notes
 Mail Client
 Program for reading and sending email
 E.g. Outlook Express, Netscape Messenger
 SMTP: Simple Mail Transfer Protocol
 Protocol for sending email
 Can also be used for receiving email but
not commonly use
Lab Notes
 POP3: Post Office Protocol 3
 Protocol for receiving email
 Email will be downloaded and deleted from the email
server when you check email.
 i.e. Cannot review the email in other computer
 IMAP: Internet Message Access Protocol
 Protocol for receiving email
 Email will remain in the email server until you delete
it.
 i.e. Can review the email anytime anywhere
Lab Notes
 FTP: File Transfer Protocol
 Protocol for exchanging files.
 Search Engine
 set of programs which perform page
retrieval, indexing and processing search
requests.
 web portals like Yahoo, Google which
allow users make searches of the web
using their search engine programs
Lab 1
 Follow the steps in lab 1
 Notes for using web searching
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A –b: search for A exclude b
A +b: search for A include b
“A b”: search for exact match of [A b]
A b OR c: search for A include either b or c
intitle:A b: search in title for A and b
A site:a.b.c: search in site a.b.c for A
define:A: search for defination of A
A ~b: search for A with the synonyms
A author:B: search for publication A with author B