Essential Peripherals Flashcards
Manifests as a 9-pin, D-shell male socket
Serial Ports
Names of serial ports and connections
DB-9 and RS-232
General purpose serial interconnect for keyboards, printers, joysticks, and many other devices. Enables hot-swapping of devices
Universal Serial Bus (USB)
Integrated circuit normally built into the chipset that acts as the interface between the system and every USB device that connects to it
USB Host Controller
Part of the host controller that makes the physical connection to the USB ports
USB Root Hub
1.5 Mbps max speed for this USB standard
Low-Speed USB/USB 1.1
12 Mbps max speed for this USB standard
Full-Speed USB/USB1.1
480 Mbps max speed for this USB standard; fully backwards compatible with USB1.1
Hi-Speed USB/USB 2.0
5 Gbps max speed for this USB standard; fully backwards compatible with USB 2.0
SuperSpeed USB/USB 3.0
10 Gbps max speed for this USB standard; fully backwards compatible with USB 2.0
SuperSpeed USB 10 Gbps/USB 3.1
Adapter card that allows a motherboard to take advantage of faster speed USBs
USB Expansion Cards
Connectors that plug upstream toward the host controller (plugged into the computer)
USB A
Connectors plug downstream into USB devices
USB B
Tends to reference USB Mini-B
Mini-USB
Tends to reference USB Micro-B
Micro-USB
Reversible USB-type cable that supports up to USB 3.1 with a top speed of 10 Gbps. Quickly becoming the de facto standard port on Android devices. Thunderbolt-enabled USB C ports can reach top speeds of 40 Gbps
USB C
An open standards connector interface that is primarily used to connect peripherals to devices, including mobile devices, if they have a corresponding port
Thunderbolt
A device that extends a single USB connection to 2+ ports, almost always directly from one of the USB ports connected to the root hub
USB Hub
Interconnection standard to send wide-band signals over a serialized, physically thin connector system. Serial bus developed by Apple and Texas Instruments; enables connection of 63 devices at speeds up to 800 Mbps. Mostly supplanted by Thunderbolt
FireWire (IEEE 1394)
FireWire standard that runs at 400 Mbps
IEEE1394a
FireWire standard that runs at 800 Mbps
IEEE1394b
Runs full duplex at 10 Gbps, so it compares to USB 3.1; connects computing devices with a Mini Display Port (mDP) connector
Thunderbolt 1
Combines internal data channels, enabling throughput up to 20 Gbps; connects computing devices with a Mini Display Port (mDP) connector
Thunderbolt 2
Offers throughput up to 40 Gbps at half the power consumption of Thunderbolt 2; uses a USB C connector
Thunderbolt 3
A hardware device that most commonly enables multiple computers to be viewed and controlled by a single mouse, keyboard, and screen. Some reverse that capability, enabling a single computer to be controlled by multiple keyboards, mice, and other devices
Keyboard, Video, Mouse (KVM) Switch
Enables users to paint, ink, pencil, or otherwise draw on a computer. Received input using a special surface
Digitizer/Pen table
A process in which computers capture/record sound waves in electronic format. In simple terms, it means capturing the state or quality of a particular sound wave a set number of times each second. Measured in kilohertz (KHz)
Sampling
Loudness
Amplitude
How high or low the tone
Frequency
Qualities that differentiate the same note played on different instruments
Timbre
Measurement of the number of characteristics of a particular sound captured during sampling
Bit depth
Sound capture recorded at 44.1 KHz with 16-bit depth and in stereo
CD Quality
Sound format developed in the 1960s to carry telephone calls over the first digital lines
Pulse Code Modulations (PCM)
File format for audio faithfully recorded using the PCM format; produces very large file sizes
WAV
Broadcast of data that is played on your computer and immediately discarded
Streaming media
Interface between a computer and a device for simulating musical instruments. Rather than sending large sound samples, a computer can simply send “instructions” to the instrument describing pitch, tone, and duration of a sound. Because this file is made up of a set of instructions rather than a copy of the sound, modifying each component of the file is easy. It is possible to program many channels/“voices” of music to be played simultaneously, creating symphonic sound
Musical Instrument Digital Interface (MIDI)
Powerful speaker capable of producing extremely low-frequency sounds
Subwoofer
Nomenclature for multiple speakers that follows a simple format in which x is the number of satellites with 1 subwoofer
X.1 system
Part of a connector into which a plug is inserted
Jacks
A special connector that enables you to connect a sound card directly to a 5.1 speaker system or receiver. Comes in both a coaxial version and optical version
Sony/Philips Digital Interface (S/PDIF or SPDIF)
Software that compresses or decompresses media streams
Codec
File containing 2+ separate, compressed tracks, typically an audio track and a moving-picture track
Container file/wrapper
Codec used for DVDs and broadcast TV
MPEG-2 Part 2
Codec used for everything from smartphone video and streaming video to Blu-Ray movies
H.264
Codec that is half the size of h.264 at the same quality, used to support 4k video
H.265
Google’s competitor to h.265, codec used in places like Android devices and YouTube
VP9
A container file for Windows (not used much these days)
AVI
The standard format for Apple QuickTime
MOV
Probably the most common format these days, used for h.264 and h.265 video
MP4
The oldest, most complex, and physically largest of all removable flash media cards
CompactFlash (CF)
Very popular format for flash media cards; also supports I/O devices. Also includes two smaller formats: mini and micro.
Secure Digital (SD)
4 MB - 4 GB
SD Capacity
4 GB - 32 GB
Secure Digital High Capacity (SDHC)
32 GB - 2 TB
Secure Digital Extended Capacity (SDXC)
First gen SD cards used this rating system to indicate the card’s minimum MB/s write speed. Class 10 card should write at a minimum 10 MB/s
Speed Class
Second gen SD cards used this rating system to indicate the card’s minimum MB/s write speed. A Class U1 card should write at a minimum of 10 MB/s
UHS Speed Class
Third gen standards; designed to support the newest video standards such as 4K and 8K. V6 class is the slowest class at 6 MB/s but goes up to V90 at 90 MB/s
Video Speed Class
Supports minimum if 10 MB/s sustained write and sustains 1500 IOPS while reading and 500 IOPS while writing
Application Performance Class A1
Supports minimum of 10 MB/s sustained write and sustains 4000 IOPS while reading and 2000 IOPS while writing
Application Performance Class A2
Special method for storing data on a CD. Divided the CD into fixed sections, each holding 2353 bytes
CD-ROM
Each increase is based on multiples of 1x 150 KBps
CD-ROM Speeds
74 minute, 650 MB and 80 minute, 700 MB
CD-R Varieties
Holds 4.37 GB, more than 2 hours of video
DVD-5 (12cm, SS/SL)
Holds 7.95, about 4 hours of video
DVD-9 (12cm, SS/DL)
Holds 8.74 GB, about four and a half hours of video
DVD-10 (12cm, DS/SL)
Holds 15.9 GB, more than 8 hours of video
DVD-18 (12cm, DS/DL)