Session 13 Flashcards
Moore’s Law and Processor Performance **
argued # of transistors to put in a per square inch is going to double every two years
growth is exponential
predicts the power of the computer processor
transistor 1s-0s; Moore’s predicts # of transistors
MIPS=Million instruction per second
Falling cost of chips *
vertical axis- goes down by exponential speed (reality it is much faster deadline)
Ex. something cost $5 to manufacture in 1965, now one ten millionth
$1 gets you $50 million in return
Understanding Computing Power ***
power of CPU (central processing unit)
Measurement unit- hz (hertz) or MHz, GHz,
One hertz= 1 instruction/second
so 3.2 GHz= 3200000000 instructional/second
Understanding Computing Power example
Shaosong’s laptop: 2.1 GHz CPU 64 bit
Evolution of IT infrastructure **
mainframe (mini computer era: (1959-present)
personal computer era: 1981 to present)
Client (server era: 1983 to present)
Enterprise Internet computing era (1992 to present)
cloud & mobile computing era (2000 to present)
Miniframe & Minicomputer ErA
giant computer: electronic accounting machine, hold most imp. infro of company; can cater to hundreds of ppl at a time; use mainframe by using a remote login terminal; ie dante server (mainframe of UW)
Client server era
client- internet-web server- application server- sales, production, accounting, HR- data
Enterprise Internet Computing Era
The digital firm electronic business- factories (just in time production, continuous inventory replenishment, production planning.
Business Partners-joint design,outsourcing
Cloud & mobile Computing Era ***
Inner Circle: The cloud
Second Circle: google, sales force, microsoft, zoho, yahoo, amazon
Third Circle: computers
Emerging Tech: Grid Computing
Search for extra-terrestrial intelligence: to tease out hte weakest signals, a great computer power is necessary. SETI programs can never afford to build or buy power, what if they used lots of small computer simultanenoutlsy on different parts.
