CISB 11 -Computer Info Systems (Ch 7)

a connected system of objects or people
cellular radio transmissions
used with cell phones & are sent and received via cellular (cell) towers
devices that respond to a stimulus (such as heat, light, or pressure) & generate an electrical signal that can be measured or interpreted
computer network
a collection of computers & other hardware devices connected together so that network users can share hardware, software & data, as well as electronically communicate with each other
mobile phone
aka wireless phone
used to connect LAN & internet
Local Area Network (LAN)
a network that covers a relatively small geographical area, such as a home, office building, or school
Global Positioning System (GPS)
a network consists of 24 Department of Defense satellites that are used for location & navigation purposes
wireless USB
a new standard designed to connect peripheral devices that transfers data more quickly (similar to Bluetooth)
peer-to-peer (P2P)
a network where a central server is not used
collaborative computing
takes place via both private company networks & the Internet
the protocol used for transferring data over the Internet
simplex transmission
an uncommon in data transmission

most devices that are mainly one-directional, such as a printer, can still transmit error messages & other data back to the computer

geosynchronous satellites
travel at a speed & direction that keeps pace with the earth’s rotation, so they appear (from earth) to remain stationary over a given spot
the amount of data that can be transferred (such as over a certain type of networking medium) in a given time period
serial transmission
data is sent 1 bit at a time, one after the other along a single path
a current Wi-Fi standard; supports data transfer rates of 54 Mbps & uses the same 2.4 GHz frequency as 802.11b, so their products are compatible
analog cell phones
the original first-generation cell phones designed for voice data only
medical monitors
electronic monitors that take the vital signs of an individual (such as weight, blood-sugar readings, or blood pressure) or prompt individuals to answer questions