Advertisement Upgrade to remove ads

system

a set of components that interact to achieve a common goal

information system

a collection of hardware, software, data, people, and procedures that work together to produce quality information

system development

a set of activities used to build an information system

phases

system development activities are often grouped into larger categories called _____

system development life cycle

the collection of phases

planning analysis design implementation operation, support, and security

5 phases of SDLC

users

anyone for whom the system is being built

systems analyst/developer

responsible for designing and developing an information system

steering committee

a decision-making body in an organization

project team

consists of users, analyst, IT professionals who work on the system development project

project leader

manages and controls the budget an schedule of the project

project manager

controls the activities during system development

feasibility

a measure of how suitable the development of a system will be to the organization

project request

in large organizations users right a formal request for a new or modified information system

planning phase

begins when the steering committee receives a project request

analysis phase

conduct a preliminary investigation and perform detailed analysis

IT consultant

a professional who is hired based on computer expertise, including service and advice

prototype

a working model of the proposed system

direct conversion

the user stops using the old system and begins using the new system on a certain date

parallel conversion

consists of running the old system alongside the new system for a specified time

phased conversion

each location converts at a separate time

pilot conversion

only one location in the organization uses the new system

motherboard

the main circuit board of the system unit; electronic components attach to it

central processing unit

the brain of the computer

system clock

controls the timing of all computer operations

clock speed

the pace of the system clock- measured in GHZ

machine cycle fetch decode execute store

_________ is for every instruction, a processor repeats a set of four basic operations, which comprise a machine cycle _____, _____, ____, and _____

bus

allows the various devices both inside and attached to the system unit to communicate with each other; path bits take on motherboard

computer literacy

having a current knowledge and understanding of computers and their uses

hardware

the electric, electronic and mechanical components of a computer

input device

any hardware component that allows you to enter data and instructions into a computer

output device

any hardware component that conveys information to one or more people

memory

electronic components that store instructions waiting to be executed and data needed by those instructions

storage device

records and retrieves items to and from storage media

software

a series of related instructions, organized for a common purpose, that tells the computer what tasks to perform and how to perform them

GUI

visual images such a icons; what you are interacting with

system software

programs that control or maintain the operations of the computer and its devices

operating system utility programs

2 types of system software

application software

consists of programs designed to make users more productive and/or assist them with personal tasks

operating system

a set of programs that coordinates all the activities among computer hardware devices

utility program

allows a user to perform maintenance-type tasks usually related to managing a computer, its devices, or its programs

servers

small cabinet; controls access to the hardware software and other resources on a network

mainframes

partial room to a full room of equipment. large expensive powerful computer that can handle hundreds or thousands of connected users simultaneously

supercomputers

full room of equipment; the fastest most powerful computer

embedded computers

miniature; special purpose computer that functions as a component in a larger product

office user

a company with fewer than 50 employees; or the self-employed who work from home

home user

use computers at home

mobile user

use a computer on a mobile device while away form home, work or school

power user

user who requires the capabilities of a powerful desktop computer, called a workstation

enterprise user

person in a large company with hundreds or thousands of employees

internet world wide web

the _______ is a worldwide collection of networks that links millions of businesses, govt agencies, educational institutions, and individuals; _____ is a widely used service on the internet, consists of a worldwide collection of electronic documents

portal

a website that offers a variety of internet services from a single, convenient location

search engine

a program that finds web sites, web pages, images, videos, news maps

e-commerce

a business transaction that occurs over an electronic network such as the internet

ip address

a number that uniquely identifies each computer or device connected to the internet

netiquette

the code for acceptable behaviors users should follow while on the internet

top level domain

.com

domain name

www.google.com

url

http://www.google.com

system unit

a case that contains electronic components of the computers used to process data

RAM ROM cache

____ main memory; ___ memory chips store permanent data and instructions; ______ stores frequently used data and instructions

volatile nonvolatile

when the computer's power is turned off, ________ memory loses its content; while _______ does not.

system bus frontside bus

which bus connects the cpu to the RAM

ROM

the boot up instructions are in which memory?

ASC11 unicode

the _____ understands 256 symbols while the ____ understands 65000

Cache ROM

____ is volatile and ___ is nonvolatile

gigahertz gigabytes

speed is measured in ______ and memory is measured in _____

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set