Info Tech

Topics: Internet, Public-key cryptography, Computer network Pages: 10 (2031 words) Published: February 8, 2013
Seminar 1 –

1. Digital Firm vs. Traditional Firm
a. Greater flexibility in organization management
i. Time-shifting – Open 24/7
ii. Space shifting – No longer confined to shopfront b. Manage business relationships, processes, assets digitally 2. Why do companies invest in IT?
c. 6 strategic business objectives
iii. Operational excellence – IT increases efficiency and productivity iv. New products, services & business models – New business models require the use of IT v. Customer & supplier intimacy – SCM & CRM (Refer to Seminar 10 on Enterprise Systems) vi. Improved decision making – More accurate data captured = Better information vii. Competitive advantage – Give themselves a competitive advantage in terms of better performance e.g. responding to customers & suppliers in real time (JIT) viii. Survival – IT necessary for businesses due to industry-level changes e.g. introduction of ATMs by Citibank

Seminar 2 – Hardware & Software

Hardware
1. Define IT infrastructure.
a. Set of physical devices and software (hardware & software) along with the human resources required to operate the entire enterprise 2. Identify the 7 components of IT infrastructure.

i. Computer hardware platforms
ii. Operating system platforms
iii. Enterprise software applications
iv. Data management and storage
v. Networking/telecommunications platforms
vi. Internet platforms
vii. Consulting system integration services
3. Identify and describe the 5 eras of IT infrastructure evolution b. General-purpose mainframe & minicomputer era: 1959-present i. 1958: centralized computing
* 1 mainframe hook up to thousands of online remote terminals ii. 1965: decentralized computing
* introduction of less expensive DEC minicomputers a. Personal computer era: 1981-present
b. Client/server era: 1983-present
i. Desktop clients networked to various types of servers (network, application, Web), with processing work split between clients & servers ii. Network may be two-tiered or multi-tiered

c. Enterprise Internet computing era: 1992-present
iii. Internet era
* Integration of disparate networks, applications using Internet standards & enterprise applications d. Cloud computing era: 2000-present
iv. Model of computing where firms & individuals obtain computing power and software applications over the Internet 4. Identify & describe the technology drivers of IT infrastructure. - What drives IT infrastructure evolution?

c. Moore’s Law & microprocessing power
iii. No. of transistors on a chip/computing power doubles every 18 months d. Mass Digital Storage
iv. Increasing amount of digital information requiring storage * Doubles every year
v. Fortunately, cost of storing this information is decreasing at an even quicker rate! * Exponential rate of 100% annually
vi. Metcalfe’s Law & network economics
* Demand for network access increases as no. of network users increase thus causing value of network to its existing members and network owner to grow exponentially * Applies to “lure” value for non-members to join

vii. Declining communication costs & the Internet * Fall in communication costs = increased utilization of communication & computing facilities viii. Common standards and network effects

* Common technology standards
* Development of products based on a single standard
* Increases efficiency
* Leads to powerful economies of scale
5. Identify the 5 components of a computer
e. Input devices (keyboard, webcam)
f. Processing unit (CPU)
g. Storage devices (Hard disk)
h. Output...
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