Chapter 2 Peripherals and Connectors Flashcards
1.5, 2.1, 2.2
Data in Transit
digital data that is actively moving between two different computer systems, applications, or locations.
(Measured in bits/per second) or bps; Kbps, Mbps, Gbps, Tbps
Throughput
the amount of data that can be sent through a cable or space. There are about 1000 Bits in a kilobit and so forth
- Measured in bits/per second (bps)
- Kbps, Mbps, Gbps, Tbps
Interface
a physical connection across which two or more separate components of a computer system exchange information
- Network Interface
- Peripheral Device Interface
Network Interface
allow communication from one computing device to another computing device
- connection from a laptop to a smartphone
Peripheral Device Interface
allow communication from a computing device to a peripheral device
- a connection from a laptop to a printer
Graphical Device Interface
allow you to transmit visual data for display purposed from a computing device to a graphical device
- interface that created a connection from a desktop PC to a computer monitor
Wired Interfaces
require a cable to extend between two devices
- terminate with a connector and these connectors will plug into a port on the device
Connector
the side of a connection with a pin or pins
Port
side of a connection with a hole or holes
Wireless
uses radio frequencies, or RF for short
- does not mean a physical connection does not exist
Radio Frequencies
an electromagnetic signal used to connect computing devices without wires
- electromagnetic connection is still a physical property allowing transmitting of information making it a physical interface
Electrical Signal
when electricity is used to convey information. There are two main types of signals used in electronics: analog and digital signals
- analog and digital signals
Analog Signal
a signal that produces a smooth and continuous curve where binary 1s and 0s are represented by the highs and lows of the signal voltage
- produces smooth and continuous upward and downward curves
Digital Signal
a signal that represents data as a sequence of discrete values where binary 1s and 0s are represented by the presence or non-presence of voltage
- allows for higher data throughputs
- gradually increases and decreases in voltage are replaced with discrete values
Telephone Connector (RJ-11)
a wired networking interface standard used for telephone communications and dial-up internet
- 6 pin connector
- commonly found in house phones and modems
Ethernet Connector (RJ-45)
a wired networking interface standard used in Ethernet networking to terminate ethernet CAT cables
- 8 pin connector
- commonly found in routers, switches NICs
Category, or CAT cables
a type of twisted pair cabling
- 8 individuals wires
- grouped into 4 pairs
- each pair is color coded and then twisted together
Near Field Communication (NFC)
a wireless networking interface standard that uses radio frequencies to share data over a short distance of a few centimeters
- Distance limitation of 18cm (6in)
- Maximum throughput of 424 Kbps
- contactless payment processing (Apple pay)
Bluetooth
a wireless networking interface and peripheral device interface standard that uses radio frequencies to share data over a short distance of a few meters
- Distance limitation of 10m (30ft)
- Maximum throughput of 24 Mbps
- wireless networking device and peripheral device interface
Universal Serial Bus (USB)
a wired peripheral device interface standard
- USB Type A: most common connector seen mostly on flash drives
- USB Type B: used to connect printers
- Micro USB: used to charge older mobile devices
- Mini USB: used to charge more recent devices
- USB Type C: used with the most current device. Is bi-directional
Plug-and-play
revolutionize the way we connect and use peripheral devices by eliminating the need for complex manual software installations
Hot-swappable
plug or unplug USB devices from your computer while it is powered on, without needing to restart or shut down the system, providing convenient and seamless connectivity
Data Transmission and Power
enables the simultaneous transfer of data and power between devices
FireWire
a wired peripheral device interface standard
- plug-and-play
- hot-swappable
- Data Transmission and Power
- 6 pin and 4 pin connectors options
Thunderbolt
a wired networking interface, peripheral device interface and graphical device interface standard all in one. Uses video, sound, internet connectivity, power and data overall
- Transmits visual data for display purposes
- Supports throughputs up to 40Gbps
Radio Frequency Identification (RFID)
a wireless peripheral device interface technology used to communicate and interact with RFID-enabled peripherals
- Readers/Scanners and Tags
- Passive and Active
Video Graphics Array (VGA)
- Released in 1986
- has a 15-pin connector
- provides video only
- analog signals only
- separated and individually transmitted colors as Red, Green, and Blue (RGB) values
Digital Video Interface (DVI)
has high picture quality but cannot transfer sound. Three types: DVI-D (Digital), DVI-A (Analog), DVI-I (digital & analog
- released in 1999
- analog and digital signals
- connectors can have up to 29-pin
- provides video only
High-Definition Multimedia Interface (HDMI)
- released in 2002
- had a 19-pin connector
- provides audio and video
- Digital signals
DisplayPort
is an interface for digital displays, particularly computer monitors. Great for high definition video and sounds.
- released in 2008
- has a 20-pin connector
- provides audio and video
- digital signals
Printer
a peripheral device which makes a physical rendering of digital data, usually on paper or creates a physical object from a three-dimensional digital model in the case of a 3-D printer
- Laser printers
- Inkjet Printers
- Thermal Printers
- Impact Printers
- 3-D Printers
Scanner
a peripheral device that optically scans images or object and convers them into digital data
- flatbed scanners
- sheet-fed scanners
Keyboard
a peripheral device used to input data and commands into a computer or other electronic device
Mouse
a hand-held pointing device that allows users to control the movement of a cursor or pointer on a computer screen
Camera
a peripheral device that records video images using a digital sensor
- external or internal
- may include microphone
External Hard Drive
a peripheral storage device, often portable, that connects to the exterior of a computing device
- commonly connect via USB or Thunderbolt interface
Speakers
a peripheral output device that converts digital data to audible sounds
- playback device
Display
a peripheral output device that converts digital data into visual images for human observation
- Computer Monitors
- Built-in Screens
- Projectors
- Television
Scaling
a configuration option that adjusts the size of text, icons, and navigation elements presented to the user
Display Resolution
the number of pixels displayed on a screen, determining the level of detail and clarity in the visual content
- width x height
Plug-and-Play (PnP)
an installation type that allows a peripheral device to be easily connected or installed without the need for complex configuration, setup processes, or software installation
- faster installation
- no technical expertise requires
- limited features
Device Driver
a software program that facilitates communication between a computing device’s operating system and a specific peripheral device.
- slower installation
- requires some technical expertise
- custom features
Input Device
a device that transfers a user action data for processing
- keyboard
- mouse
- trackball
- joystick
- scanner
- microphone
Output Device
is a device that provides (Outputs) data to the user.
- printer
- speaker
- headphones
- monitor
- projectors
