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Information Systems Test 2
IS 220
54
Computer Science
Undergraduate 2
04/07/2012

Additional Computer Science Flashcards

 


 

Cards

Term
3 Components of Hardware
Definition

Input Devices 

Processing Devices

Output Devices

Term
Innput Devices
Definition
Used to enter information into a computer
Term
Processing Devices 
Definition
Transform inputs into outputs
Term
Output Devices
Definition
Deliver information to users in a usable format
Term
CPU
Definition

Central Processing Unit

Responsible for performing all the operations of the computer. Also called a microprocessor, processor, or chip/

Term
ASC II
Definition
American Standard Code for Information Interchange-Character encoding methof based on the english alphabet that provides binary codes to represent symbols.
Term
ROM(Read-only memory)
Definition
A type of nonvolatile primary storage that is used to store programs and instructions that are automatically loaded when the computer is turned on
Term
RAM(Random-access memory)
Definition
A type of primary storage that is volatile and can be accessed randomly by the CPU.
Term
Compilers
Definition
A software program that translates an entire program' source code into machine language that can be read and executed directly by the computer.
Term
Operating Systems
Definition

Peripherals

Application software

Users

Also used in embedded devices,written in assembly language, and performs day to day operations.

Term
Application Software
Definition

For performing specific user tasks. Writing a business letter and processing payroll.

Two Types:

Customized Software

Commerical Software

Term
Programming Languages
Definition

1GL(1940's)-machine language(binary)

2GL-(1950s)-symbolic languages

3GL-(mid 1950's)- English-like words

4GL-(1970s)-Outcome Oriented

5GL-Natural languages

Term
Components of Telecommunication
Definition

Senders

Receivers

Transmission medium

Protocols

Term
STAR
Definition

All workstations connected to a central hub.

Easy to lay out and modify

Failure of hub can cause network failure

Term
RING
Definition

Messages move in one direction around the circle.

Covers large distances.

Failure of one node can cause network failure.

Difficult to modify.

Token passing used.

Term
BUS
Definition

Easiest to extend.

Simples wiring layout.

Difficult to diagnose network faults.

Used CSMA/CD

Term
TREE/MESH
Definition

Devices fully or partially connected to each other.

Short routes between nodes

Many possible routes.

Performs well in heavy traffic.

Most WANs use partial mesh.

Term
WAN(Wide area Network)
Definition

Spans relatively large area.

Value-added networks

Global networks 

Enterprise networks.

Term
MAN(Metro-Area Networks)
Definition

Limited geographic scope-citywide area

Combine LAN and fiber-optic technologies 

Term
PAN(Personalt Area Network)
Definition

Exchance data between computing devices 

Short range radio communication-10 meters

Enabling Technology: Bluetooth

Term
PBX
Definition

Telephone system serving a particular location

Connects phones and computers 

Connects PBX to outside network

Term
WLAN
Definition

Spans relatively small area- tens of kilometers

 

Term
Digitizing 
Definition
Conversion of analog into digital information
Term
Modems
Definition

Enable transmission over telephone lines.

Digital signal conveted to analog.

Term
Bandwidth
Definition

Tranmission capactity of a computer or a communications channel 

Measured in megabits per second

2 million characters per second

 

Term
Attenuation
Definition
Power of an electric signal weakens with distance
Term
T1/T3/DSL/ISDN
Definition
Term
KILO/MEGA/GIGA/TERA
Definition
Term

TCP

Transmission Control Protocol

Definition

Breaks information into packets

Manages transfer of packets between computers

Term

IP

Internet Protocol

Definition

Defines how the packet must be formed 

Contains destination address

Term
WWW
Definition
One of the most powerful uses of the internet
Term
FTP
Definition
High speed network connectivity to homes and offices that is used by fiber optics.
Term
EC(E-Commerce)
Definition
Exchages of goods and services via the internet among and between customers, firms, employees, business partners, suppliers, and so on.
Term
History of E-Commerce 
Definition

Precursors to e-commerce include

Baxter Health Care, Electronic Date Interchange, French Minitel, and CALS. None of these systems had functionality of Internet. E-commerce began in 1995.

Term
Types of E-Commerce
Definition

Business to Consumer

Business to Business 

Consumer to Consumer

Business to Employee

Business to Government

P2P 

M-Commerce

Term
Revenue Model-Advertising
Definition

Example: Yahoo

Revenue Source: Fees from advertisers in exchange for advertisements

Term
Revenue Model-Subscription
Definition

Example: Wall Street Journal.com

Fees from subscribers in exchange for access to content or services.

Term
Revenue Model-Transaction Fee
Definition

Example: eBay.com

Revenue Source: Fee(comissions) for enabling or executing a transaction.

Term
Revenue Model-Sales
Definition

Example: Amazon.com

Sales of goods, information, or services.

Term
Revenue Model-affiliate
Definition

Example-MyPoints.com

Revenue Source: fees for business referrals

 

Term
E-Tailing
Definition

Selling goods and services online

Click-and-mortar(walmart)

Click only(Amazon.com)

Vitrual Company(priceline-reverse pricing)

 

Term
E-Tailing Benefits
Definition

Product Benefits(unlimited number and variety or products easier comparison shopping)

Place Benefits(Anywhere, anytime, purchasing on global scale)

Price Benefits(no expenditures for physical retail space).

Term
E-Tailing Disadvantages
Definition

Product delivery drawbacks(delay between product order and delivery)

Direct Product experience drawbacks(lack of sensory information and lack of social element)

Term
E-Auctions
Definition

Transaction fee-based revenue system

Forward Auction-eBay, auctions.yahoo.com

Reverse Auction-Priceline, eWanted.com

 

 

Term
Extranets
Definition

New, more affordable alternative to EDI

Advantages: Improved timelines and accuracy of information. Low Cost of adoption. No specific user trainign required.

Term
Intranets
Definition

Business-to-employee(B2E) electronic commerce

Internet based private network using Web technologies 

Boeing: more than 1 million pages 

 

Term
Search Engine Marketing 
Definition
Paid Inclusion: Fee paid to the search engine to appear in the results.
Term
Payment Services
Definition

Credit Card

Online transactions without sharing private information with actual seller 

Paypal(cants send and recieve money if you have an e-mail account)

Google Checkout(linked with Google search)

Term
M-Commerce 
Definition

Electronic transactions using wireless mobile devices

Mobile networks

Smart phones

Term
Supply Chain Management 
Definition
Information systems focusing on improving upstreams information flows with two main objectives: to accelerate product development and reduce costs associated with procuring raw materials, components and services from suppliers.
Term

CRM(Customer Relationship Management)

 

Definition
A corporate level strategy designed to create and maintain lasting relationshis  with customers by concentrating on the downstream information flows through the introduction of reliable systems, processes, and procedures.
Term
EDI(Electronic Data Interchange)
Definition
The digital, or electronic, transmission of business documents and related data between organizations via dedicated telecommunciations networks.
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