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Media Technologies
Media Technologies: Class 14, Digital Media and the Internet
Media Technologies: Class 14, Digital Media and the Internet
1 Bit
1.1 binary digit
1.2 fundamental building block of computing
1.3 expressed…
1
0
1.4 logical values
yes/no
true/false
+/-
on/off
2 Byte
2.1 basic unit of digital information
usually eight bits
2.2 basic meaningful computer unit
a letter of text
3 Diodes
vacuum tubes
Thomas Edison 1883
John Fleming 1904
Lee deForest 1912
3.5 ENIAC
electronic numerical integrator and calculator
processed calculations for the hydrogen bomb
4 ARPANET
4.1 Advanced Research Projects Agency
branch of Defense department
started in 1958 in response to Sputnik launching
cooperated with research universities
headed by J.C.R. Licklider
4.2 distributed network
computer network
decentralized
designed to survive nuclear attack
4.3 first connection
between UCLA and Stanford
November 1969
message: “login”
resulted in both computers crashing
4.4 first public demonstration in 1972
email communication
internetting
: a network of networks
5 Transistors
Texas Instruments 1947
Minicomputers
cabinet sized computers
6 Microprocessors
Intel 1971
silicon switches
microcomputers
7 Altair 8800
7.1 microcomputer, 1975
7.2 mail order
7.3 Altair BASIC
written by Bill Gates
Microsoft’s first product
7.4 specs
Intel 8080 processor
256 bytes
front panel with lights
$400 kit. assembled for $500.
8 Alto
8.1 Xerox PAC
8.2 first personal computer
8.3 1973
8.4 desktop metaphor
mouse
GUI
8.5 Ethernet
high-speed LAN
Bob Metcalfe
9 Apple Computer
9.1 Apple II
personal computer, 1977
Steve Jobs and Wozniak
9.2 Macintosh
1984
graphic user interface
Hypercard
linking on keywords or icons
10 International Business Machines
10.1 IBM PC
10.2 IBM PC, Jr.
11 Bulletin Board Systems
11.1 exchange email
11.2 post opinions
11.3 upload and download information
12 Commercial Internet
12.1 NSF withdrew funding
12.2 opened network to commercial users in 1991
12.3 post Cold War
13 World Wide Web
13.1 Tim Berners-Lee
13.2 1991
13.3 hypertext markup language
13.4 World Wide Web
linked documents
transporting text documents across computer networks
14 Mosaic
14.1 Mark Anderseen
14.2 University of Illinois
14.3 first graphical world wide web browser
14.4 average computer user could browse the web
14.5 basis for Netscape (eventually Firefox)