DIG 2000 - lectures Flashcards
GUI
graphical user interface
BIT
smallest unit of info stored in computer
nibble
4 bits
bite
eight digits
ASCII
american standard code for info interchange (numerical alphabet)
LAN
local area network
WAN
wide area network
Node
one computer on a network
HUB
central node on multinode system
Ethernet
technology used to connect computers on land. (wires)
MAC address
12 character hardware address unique to each “interface cord” on a network.
IP address
(Internet Protocol) 12 digit software address unique to each “machine” on a given network.
DNS
(domain name system) Matches IP address to names.
TCP
allows computers on a network to form connections with each other.
FTP
(file transfer protocol) allows computers to transfer files.
SMTP
(simple mail transfer protocol) protocol that allows us to send mail
pop3
allows us to receive mail
http
(hypertext transfer protocol) Designed for us to use hypertext.
URI
(uniform resource identifier) is the http. First part of url
URL
uniform resource locator
reflective control
light reflecting objects
incident control
controlling lights. (think incinerate)
exposure
aperture
color additive
the mixing of colored light. Adding wavelengths
color subtractive
mix pigments of color, subtracting wavelengths.
actual movement
movement in real world
apparent movement
when one stationary object is replaced by another stationary object.
induced movement
one object giving movement to one standing.
two types of graphics
BIT Map and vector
aliasing
jagged effect
anti-aliasing
filtered, more smooth than aliasing. Add intermediary shades
bezier curve
smooth curve specified by four control points
stroke
makes path visible. path: between points.
fill
fills inside a close path
rendering
when computer does animation
codec
compression decompression. Algorithms
png
portable network graphics
linear motif
reducing an image to lines
XML
(extensive markup language) portable way to carry data around.
W3C
www consortium
IO Processor
(Input Output) does calculations.
byte
8 bits
Moore’s Law
every two years, power doubles.
Von Newman four parts
ALU, CPU, Memory, IO
ALU
(arithmetic logic unit) computing
CPU
(central processing unit) (control unit) keeps track of info, tells ALU
Memory
Sequence of RAM and ROM
RAM
“random access memory” changes info
ROM
“read only memory” firmware
buzz
different sections of computer connected by it. parallel and serial.
system software
manage computer operation. OS
OS
(operating system) in charge, we tell it. SIngle user or multiuser. Both one stream of data.
nanosecond
one billionth of a second
MIDI
musical instrument digital interface
trademark
protects words, names, symbols, logos.
patent
protects rights of individuals who make discoveries or inventions.
trade secrets
information, design, and devices that companies want to keep secret
copy rights
protects authors of original works from damages caused by other people reproducing it.
persistance of vision
latency to eyes’ response
interlacing
i. 535 lines, half at a time
progressive scanning
p. no interlacing. Ex. computer monitors
NTSC
(national television standards commission) 525 lines, 4:3.
Pal
phase alternating line. 6:9
spacial compression
each frame is compressed
temporal compression
sequence of frames
key feature
where change occurs
programs
list of instructions that directs steps of a computer.
assembly language
interprets binary
programing language
creates and controls systems (JAVA)
scripting language
controls an already existing system
variable
logical container for values
aray
structure to store a group of values as one entity.
function
abstraction of many script data into a single entity.
objects
script organized into collection of objects.
client side scripting
script executed on user’s machine (HTML)
server side scripting
executed and processes on web server. CGI
CGI
(Common Gateway Interface) on server side scripting. High traffic server gets overwhelmed.
sprite animation
store single copy of all static element.
walk cycle
using pics over and over
tweening
the inbetweeners of key frames.
Basic
Bill Gates + Paul Allan
Visicalc
spreadsheet by Jobs
oscillator
breaks up time.