Week 1 (Ch. 1, 3, 4) Flashcards
what are the three components of information systems
technology, people, processes
what is a digital device
a device that processes electronic signals into discrete values
what are analog signals
continuous signals that can be represented by a smooth wave
what are binary values
two discrete values (1 and 0)
what is a bit
each 1 or 0
what is a byte
8 bits (1 character)
what is the motherboard
main circuit board of the computer
what is the CPU
brain of device, caries out commands sent by software
what is a hertz
a cycle per second
what is a dual core processor
a CPU with two processors to increase speed
what is moores law
computers are becoming faster and cheaper
what is RAM
working memory
what form of memory is volatile
RAM
what does the hard disk do
long term memory storage using disk
what does the SSD do
long term memory storage using flash memory
what is an example of removable media
USB drive
how is CPU speed measured
clock speed , GHz (billions of cycles), hertz indicated time taken to complete a cycle
how is motherboard speed measured
bus speed, MHz, speed at which data can move across the bus
how is RAM speed measured
data transfer rate, Mb/s, time taken for data to be transferred from memory to system
what are input devices
devices that allow for entering data
what are output devices
devices that display or project data
what is e-waste
discarded tech junk
what does an operating system do
manages hardware and creates interface between hardware and user
what do an application softwares do
performs specific tasks for the user
what are examples of productivity softwares
word processing apps, spreadsheets, presentations etc (microsoft office)
what are examples of collaborative systems
google drive, zoom
what are utility softwares
programs that allow you to fix or modify your computer
what are desktop softwares
applications installed on a personal computer
what are enterprise softwares
softwares used by companies to manage multiple users in an organization
what does a database management system (DBMS) do
stores and retrieves data that an application creates and uses
what is cloud computing
applications made accessible through the internet
what is software as a service
softwares that are rented rather than purchased
what are private clouds
private server used by organizations
what is virtualization
process of using software to simulate a computer or other device
what is a proprietary software and what is a pro and con
developed internally, specific but expensive
what is an off-the-shelf software
bought from somewhere else, cheaper but not neccesarily customized
what is an open source model
source code available to public
what is a closed source model
source code not available to public
what is the bridge that connects the computer side and the human side of the system
data
