WDD - Design Flashcards
how should a website structure be illustrated
using a diagram which includes:
all of the pages that will be part of the website
links between internal pages using arrows to indicate link direction
links to external pages using arrows to indicate link direction
what should a wireframe include
navigational links
consistency across multiple pages
relative vertical positiong of media
file formats of media
Main purposes of the Copyright, Design and Patents at
- To ensure people are rewarded for their work
- To give the copyright holder protection from their work being copied or stolen
In each case the developer or owner of the website must either
own the copyright themmselves
seek permission to use the content from the copyright owner
give credit for the use of content
WAV files
uncompressed
high quality sound
standard for CDs
large file size
MP3
Lossy Compression
Removes high and low frequencies generally not heard by human ear
compression results in file size around one tent of original
small file size
JPEG
Lossy compression
24 bit colour depth
No animation
No transparency
Used to store photographs
GIF
Lossless compression
8 bit colour depth
Animation
Transparency
Not suitable for photographs, good for cartoons and animations
PNG
Lossless compression
24 bit colour depth
No animation
Transparency
Used to store photographs
what is resolution
the total number of pixels in the image
Lower the resolution
-lower image quality
-smaller file size
Higher the resolution
- better the image quality
-larger file size
What is colour depth
The measure of the number of bits used to store the colour for each pixel in an image
8 bit colour depth
256
16 colour bit
65,536
24 bits
16,772,216
The higher the colour depth
better image quality
larger file size
The lower the colour depth
lower image quality
smaller file size
what is sample rate
a measure of how many times per second a sound is sampled
Higher sample rate
better audio sample
larger file size
Lower the sample rate
lower the audio sample
smaller file size
what is the purpose of compression
to reduce the size of a file
what will a compressed file do
download quickly
stream quicker
takes up less space in memory
Lossless compression
None of the original data is lost
file tends to be larger compared to lossy compression
Lossy compression
some of the original data is lost although compression algorithms attempt to minimise the loss of quality
file tends to be smaller compared to lossless compression
what is a low fidelity prototype
a sketch of the proposed web page with more detail than the wireframe
A low fidelity prototype will include
any actual heading and paragraph text
sketched versions of any images or video
purpose of a low fidelity prototype
test navigation
show the intended look to the user
allows the end user to request additional functionality
