Chap 1 Flashcards
Computer
A computer is an electronic device, operating
under the control of instructions stored in its own
memory
Types of Computers
Supercomputers.
– Most powerful computers.
* Mainframe computers.
– Process large amounts of data.
* Midrange computers.
– Servers.
* Personal computers.
– PCs.
– Five types of PCs
Five types of PCs
-Tablet
-Desktop
-Smartphones
-Laptop
-Wearables
Input Device
translate data into computer language.
Examples : Keyboard
Pointing device
an input device that allows a user to
control a small symbol on a screen, called the pointer
Scanner
a light-sensing input device that converts
printed text and images into a form the computer can
process
output device
is any hardware component that
conveys information from a computer or mobile
device to one or more people (ex: printer)
printer
output device that produces text
and graphics on a physical medium, such as paper
or other material
display (monitor)
output device that visually
conveys text, graphics, and video information
Speakers
allow you to hear audio such as music,
voice, and other sounds
– Earbuds
– Headphones
Memory
consists of electronic components that
store instructions waiting to be executed and the
data needed by those instructions
Storage device
records (writes) and/or retrieves
(reads) items to and from storage media
Ex :
Hard Disk
Solid-State Drive
USB Flash Drive
Memory Card
Optical Disc
Cloud Storage
Internet
a worldwide collection of computer
networks that connects millions of businesses,
government agencies, educational institutions, and
individual
web
consists of a worldwide collection of
electronic documents, each of which is called a
webpage
website
a collection of related webpages
web server
a computer that delivers
requested webpages to your computer or mobile
device
browser
software that enables users with an
Internet connection to access and view webpages
on a computer or mobile device
search engine
software that finds websites,
webpages, images, videos, news, maps, and other
information related to a specific topic
online social network
called a social networking site, is a website that encourages members in its online community to share their interests, ideas, stories, photos, music, and videos
with other registered users
Green computing
involves reducing the electricity
consumed and environmental waste generated
when using a computer
Software
called a program, tells the
computer what tasks to perform and how to
perform them
System Software
Operating system
Tools
Applications
Installing a program is the process of setting up the
program to work with a computer or mobile device,
printer, and/or other hardware
* Once installed, you can run a program so that you
can interact with it
* You interact with a program through its user
interface
communications technologies
– Chat rooms
– Email
– Fax
– FTP
– GPS
– Instant messaging
– Internet
– Newsgroups
– RSS
– Videoconference
– Voice mail
– VoIP
communications device
hardware capable of
transferring items from computers and devices to
transmission media and vice versa
Examples of wireless communications
technologies
Wireless technology
Bluetooth
Cellular radio
network
collection of computers and devices
connected together, often wirelessly, via
communications devices and transmission media
Home Networks
– Connect to the Internet
– Share a single high-speed Internet connection
– Access photos, music, videos, and other content
– Share devices
– Play multiplayer games
– Connect game consoles to the Internet
– Subscribe to and use VoIP
– Interact with other devices in a smart home
Business Networks
– Facilitate communications
– Share hardware
– Share data, information, and software
Forces of Technology
Cloud computing
-Computer on the internet
-access to more resourses
Wireless technology
- changing the way we communicate
Internet of Things (IoT)
-Continuing development of the Internet
-Allowing all types of devices to communicate
Digital literacy
acquiring current knowledge and understanding of
computers, mobile devices, the web, and related technologies.
digital citizen
a person familiar with how to use technology to become an educated and productive member of the digital world.
Wi-Fi
(short for wireless fidelity) is a wireless data network technology that
provides high-speed data connections and is
not attached to any device. It is used for mobile devices.
server
a powerful, high-capacity computer you access using the Internet
or other networks; it stores files and “serves” them, that is, makes the files
available to users; usually grouped at a location called a data center.
online social network
an online
community where users can share their
interests, ideas, stories, photos, music, and
videos with other registered users via a
social networking website, such as
Facebook, Google Plus, Twitter, Instagram,
or Snapchat.
Big data
a term that refers to the large and
complex data sources that defy easy
management with traditional data processing
methods.
Internet of Things (IoT)
an environment in which processors are
embedded in every product imaginable
(things), and these things, in turn,
communicate with one another via the
Internet or wireless networks.
IoT-enabled devices
often referred to
as smart devices because of their
capability to communicate, locate, and
predict.
Telemedicine
the use of
telecommunications technology,
including secure web-based
videoconferencing, to diagnose and
treat patients remotely, which provides
rural or remote patients access to
doctors when an in-person medical
visit is not possible.
