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Computer Science 1033A/B Study Guide - Final Guide: Network Layer, Mark P. Mccahill, Bell Labs


Department
Computer Science
Course Code
COMPSCI 1033A/B
Professor
Prof
Study Guide
Final

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CS 1033B Final Exam Notes Page 1
Compsci 1033B Final Exam Notes
MULTIMEDIA AND COMMUNICATION
- 7-15 seconds to make a good first impression, 4 min for someone to decide to go beyond first impression
- MULTIMEDIA: everything you can hear or see; Media include texts, books, pictures, music, sounds, CDs,
videos, DVDs, MP3 players, iPods, records films etc
- MUTLTIMEDIA (technical): Describes any application or technology that can be used to present: Text,
images, sound, animation video
Software applications Delivery on the Internet Via Website Combined into an application to inform,
educate, entertain
- Internet fast, cheap, and accessible (reaches people all over the world)
o # million Asia 389, Europe 313, North America 232 (??)
o More users in Asia, but greater percentage of population in North America (70.9% vs 12.4%)
Multimedia History
- 1500-1300BC: prehistoric humans paint images on the walls of their caves (Grotte de Lascaux, France
- 1914: silent movies incorporated multiple media be using film and text captions together
- 1928: Walt Disney debuts the second short starring a mouse named Mickey, and the first cartoon to use
synchronized sound (Steamboat Willie)
- 1928-1931: Movies with sound replace silent movies
- 1930s: Technicolor is introduced in film and most movies are filmed in colour after 1940
- 1937: Bell laboratories had a breakthrough in creating dual sound tracks on film. Fantasia was the first
commercial movie with a complete surround soundtrack in 1940
- 1969: NETWORK TECHNOLOGY INTRODUCED ARPANET
o ARPANET: Advanced Research Projects Agency Network, 1969
o First packet switching network and predecessor to the internet (discussed in 1962)
o Objective: a network technology to allow researchers at various locations across the country to
share information
o 4 locations in 1969 UCLA, Stanford, UC Santa Barbara, University of Utah
o 1970 East coast
- 1977: Apple starts to dominate PC market
- 1981: IBM PC announced and captures market share in 18 months
- 1991: WORLD WIDE WEB debuts (Tim Berners-Lee)
- 1992: MS Windows 3.1 is released
HTML debuts Basis for Website development
- 1993: Mosaic First graphical browser (web pages with images), by Marc Andreesen, Erin Brina, and Tim
Clark (transformed internet from research to household)
- 1994: The Rolling Stones become the first major band to broadcast a live performance over the internet
(opening band on air first Sever Tire Damage)
- 1995: Disney’s Toy Story first feature length computer generated movie (77 minutes long, 4 years to
make, 800,000 machine hours to render)
- 1996: Affordable digital cameras widely available
- 1998: GOOGLE search engine operates by Larry Page & Sergey Brin

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CS 1033B Final Exam Notes Page 2
- 1999: Napster debuts, allowing users to download and share MP3s
- 2000s: Integration of computer, memory storage, digital data, camcorders, MP3 players, Ipods, speakers,
telephones HD TV and other technologies
- Future: multimedia will continue to grow into more than 1 $100 billion industry with top three applications
#1 Entertainment $15 billion
#2 Publishing $7 billion
#3 Education/Training $7 billion
o E-leaning, iTV (interactive TV)
o Web 2.0 (sharing between users) trend in web design, development, can refer to second
generation of web-based communities and hosted services (social networking, wikis, blogs) which
aim to facilitate creativity, collaboration, and sharing between users
o Laptops becoming smaller, thinner, more powerful
o Legal issues copyright, rights management, piracy problematic since rapid technology changes
o Better skills strong understanding of media and moving images as well as traditional IT and
programming skills
Multimedia features
1. INTERACTIVITY
o USER CONTROL over the application
o Experience ACTIVE rather than passive as with television
o Examples: clicking on links on the internet, on-line computer-based exam, driving simulation
2. HYPERLINKING
o INDEX allows for “jumping” around sections
o Vs Sequential: start at beginning and move to the end (books, movies, videos)
HTML has features that allows you to build hyperlinks to other webpages or location on the
same page
- Computer Based Delivery
o Computer-based multimedia applications INTEGRATE the various media components and ALLOW
interactivity
o Modes of delivery of the applications include: video games, interactive web applications, CD ROM
disks, info kiosks
- Multimedia categories and applications
o Education offering instruction (CD-Roms for preschoolers, bio in virtual labs)
o Entertainment largest category (games (CDs/web), proprietary systems (X-box), MP3
players/ipods)
o Reference Encarta and interactive world atlas (interactive multimedia including sound, video, and
3-D animation to provide information and illustrate concepts)
o Business businesses delivering marketing applications and employee training on CD’s and
Internet (job openings, product lines, services)
- How should you deliver the application WWW vs CD/DVD
CD/DVD
World Wide Web
Access Time
View instantly by inserting into drive
May encounter slow connection speeds
Ability to change
content
Cannot change content must
recreate and redistribute
Easy to update material, new updates can
be accessed instantly

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CS 1033B Final Exam Notes Page 3
- Required equipment
o Development systems: systems used by multimedia developers to create applications
o User systems: systems used to playback multimedia applications
o Multimedia developer requires: sound card, video card, microphone, speakers, camera, DVD drives
TEXT
- Dual role:
o VISUAL representation of the message
o GRAPHICAL element
- Use of text in multimedia applications varies on:
o The type of application educational, entertainment, business
o Audience children, teens, adults, elderly, ESL (less text for children vs adults)
- Changing the look of webpage by changing:
o Text attributes colour, size, font type
o Design/layout/placement of text bullets, alignment, text in groups
- Emphasis can be added by varying text attributes
o Font type Arial, times new roman
SERIF tails, script, body paragraphs (times, courier new, century schoolbook, palatino)
Tails = easier to read on paper
SANS-SERIF no tails, block-oriented, headings, titles (arial, verdana, Helvetica, comic)
Easier to read paragraphs on websites, short headings
o Style regular, bold italics
o Kerning space between adjacent individual characters, measurement expressed in “em”
(emphasis) negative, 0, positive values
Helps align multiple lines
o Leading vertical space between lines of text, measured in positive, 0, or negative points
lower value closer together; higher value further apart
o Size pts vs. pixels
o Colour red, blue, black...
o Special effects underline, shadows, superscript, subscript
- Text size Pixels vs. Points
PIXEL (.ppi aka dpi)
unit of measure for monitor resolution (px)
POINTS (.dpi)
unit of measure for printer resolution (pt)
-WEB
- # of pixels per inch of monitor display
-a display setting of: 1280x1024 has 1.3 million DPI,
800x600 has 480,000 DPI
-standard resolution on Mac 72 dpi
-standard resolution on Windows 96 dpi
-PC fonts 25% larger than mac fonts on websites
-WORD
-# of dots per inch
-absolute type size usually used in printing
-higher dpi = better resolution
-points are a PRINT unit of measure
-fronts more precisely the size you want on the
screen
-some browsers will not allow the text size to change
(IE no, FF yes)
-http://www.uwo.ca
-print style sheets created to print text using points
-if web document text expressed in points
-can be displayed much larger or smaller than you
expect
-http://www.largnet.on.ca/
-Control over the viewing size
*72 pts WILL ALWAYS BE 1 INCH WHEN PRINTED,
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