• Computer: electronic device, operating under control instructions stored own memory,
can accept data (input), process data according specified rules, produce info (output), and
store info future use.
• Mobile device: Computing device small enough to hold in your hand
• Personal computer: Computer that can perform all of its input, processing, output,
storage activities by itself and is intended to be used by one person at a time.
• Motherboard: system board, main circuit board of the personal computer. (processor
o Processor: CPU, electronic component that interprets
• Desktop: Personal computer designed be in stationary location, where all of
components fit on/under a desk/table
• System unit: Case that contains +protects the motherboard, hard disk drive, memory,
and other electronic components of the computer from damage.
• Tower: Made of metal/plastic, frame that houses the system unit on a desktop
• All in one desktop: Do not have a tower and instead house the screen and system in
the same case.
• Gaming desktop: Offer high quality audio/video, graphics with optimal performance
• Workstation: Designed to handle intense calculations and sophisticated graphics
• Laptop: notebook computer, thin, lightweight mobile computer with screen in lid+
keyboard in base.
• Tablet: thin, lightweight mobile computer that has a touch screen
o Slate tablet: type of tablet that does not contain a physical keyboard
o Convertible tablet: tablet that has a screen in its lid and keyboard in its base
o Stylus: small ink pen, use instead fingertip enter data, make selections, draw on
a touch screen
o Phablet: device that combines features of a smartphone with a tablet
• Handheld computer: Computer small enough to fit in one hand. • Server: Computer dedicated provide 1+ services to other computers/devices on a
• Dedicated server: Perform specific service +can be placed with other dedicated
servers perform multiple services
• Application server: stores and runs apps
• Backup server: Backs up and restores files, folders and media
• Database server: stores and provides access to a database
• Domain name server: stores domain names and their corresponding IP
• Filer server: stores and manages files
• FTP server: stores files for user upload or download via FTP
• Game server: provides a central location for online game play
• Home server: provides storage, Internet connections, or other services to
computers and devices in a household
• List server: stores and manages email lists
• Mail server: stores and delivers email messages
• Network server: manages network traffic
• Print server: manages printers and documents being printed
• Web server: stores and delivers requested webpages to a computer via a
• Rack server: rack-mounted server, housed in a slot on a metal frame.
• Blade server: server in the form of a single circuit board/blade. Blades insert in a blade
server chassis that can hold many blades.
• Tower server: Built into a upright cabinet that stands alone.
• Virtualization: Practice of sharing/pooling computing resources, servers +storage
• Server virtualization: uses software to divide a physical server logically into many
virtual servers • Server farms: network of several servers together in a single location
• Mainframe: Large, expensive, powerful server that can handle hundreds/thousands of
connected users simultaneously
• Supercomputer: fastest, most powerful computer and most expensive. Capable of
processing many trillions of instructions in a single second
• Terminal: Computer limited processing power, enables users send data/receive info
from a server/host computer
• Thin client: Terminal that looks like a desktop but has limited capabilities and
components. Run programs and access data on a network or the Internet
• Special purpose terminals perform specific task +contain features uniquely designed for
use in a particular industry.
• POS terminal (point of sale): record purchases, process credit/debit cards, update
• Bar code reader: input device that uses laser beams to read bar codes on products
• ATM (automated teller machine): self-service banking terminal connects to host
computer through a network
• PIN( personal identification number): verifies you are the holder of the bank card
• Self-service kiosk: freestanding terminal usually has a touch screen for user
• Financial kiosk: pay bills, add minutes to phone plans, add money to prepaid
• Photo kiosk: print photos from digital images.
• Ticket kiosk: print tickets
• Vending kiosk: dispense item after payment is received.
• Visitor kiosk: manage +track visitors upon check in.
• Cloud computing: environment of servers that house and provide access to resource
users access through the Internet (email, schedules, music, photos, games, websites,
programs, web apps, servers, storage)
• Business use cloud computing: more efficiently use resources by shifting usage
+consumption of these resources from a local environment to the Internet • Smartphone: Internet capable phone: calendar, appointment book, address book,
calculator, notepad, games, browser, numerous apps: send/receive email messages,
communicate wirelessly, media player, digital camera, microphone/Bluetooth headset, live
video calls, gps signals, sync data+ information, voice control, wireless access point
• On-screen keyboard: Press keys on the screen using your fingertip/stylus
• Predictive text input: press one key and saves users time when entering text on the
• Portable keyboard: full-sized keyboard that communicates with a smartphone via
• Virtual keyboard: projects image of a keyboard on a flat surface
• SMS: Short message service, users send/receive short text messages less than 300
• Mobile to mobile: send message from mobile device to another mobile device
• Mobile to email: send message from mobile device to email address
• Web to mobile: send message from text messaging website to mobile device
• Mobile to provider: send message common short code (CSC): 4-5 digit number
assigned to specific content or mobile service provider
• MMS: Multimedia message service
• Mobile to mobile: send photo/video from mobile device to another mobile device
• Mobile to email: send picture/video from mobile device to any email address
• Voice mail: Functions like answering machine, allows someone leave voice