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Glenn HymanGary Werner
Type the following URL into your web browser to take the 10 question preassessment.
◦http://www.surveymonkey.com/s/JV2HYDQ
Stands for Universal Serial Bus It is an industry standard to connect computers with many peripherals
Created in 1996 Multiple versions: 1.0 and 1.1 (referred to as 1.x), 2.0 (a.k.a. USB Hi-Speed), and most recently 3.0
Up to 127 different devices can function off of one USB host
USB Version Maximum Data Transfer Rate
1.X 12 Mbps
2.0 480 Mbps
3.0 4.8 Gbps
Firewire is similar to USB A.K.A. IEEE 1394 Typically used to connect digital video
cameras to computers Original FireWire provided 400 Mbps data
transfer rate Newer FireWire provides 800 Mbps data
transfer rate Not as widely used, or as common, as USB
Photo credit: http://gbennett.whsites.net/zencart/images/products/firewire400.jpg
Question: Which is faster Hi-Speed USB 2.0 or FireWire?
Answer: In sustained throughput FireWire is faster than USB 2.0.
Question: If Hi-Speed USB 2.0 is a 480 Mbps interface and FireWire is a 400 Mbps interface, how can FireWire be faster?
Answer: Differences in the architecture of the two interfaces have a huge impact on the sustained throughput.
FireWire vs. USB 2.0 Hard Drive Performance Comparison Read and write tests to the same IDE hard drive connected using
FireWire and then Hi-Speed USB 2.0 show: Read Test: •5000 files (300 MB total) FireWire was 33% faster than USB 2.0•160 files (650MB total) FireWire was 70% faster than USB 2.0 Write Test: •5000 files (300 MB total) FireWire was 16% faster than USB 2.0•160 files (650MB total) FireWire was 48% faster than USB 2.0
First developed by IBM to connect printers to computers
Still found on a majority of motherboards today
Being phased out in favor of USB connections Data transfer rate of 50-100 Kbps Called parallel wire because data is
transmitted parallel to each other through the wire
Photo credit: http://www.lps2u.com/shop/images/HighPerformanceParallelCableForPrinter.jpg
Considered one of the most basic wires/connections that you can use
Been around over 20 years Is also being phased out in favor of USB Mainly used to connect to external modems, PDA’s and printers Have a maximum data data transfer rate of 115 Kbps
Photo credit: http://www.shopit.ie/images/MXT100FF_Alarge.jpg
Wire Name Maximum Data Transfer Rate
USB 2.0 480 Mbps
FireWire 400 Mbps
Serial 115 Kbps
Parallel 100 Kbps
Ethernet is not synonymous with Internet Ethernet wires are used in networking
applications Has been in use since the 1980’s Initially supported a 10 Mbps data transfer
speed “Fast Ethernet” increased the rate to 100
Mbps Gigabit Ethernet currently peaks at 1000
Mbps
Photo credit: http://kbserver.netgear.com/images/1561_straight_ethernet.jpg
Photo credit: http://img.alibaba.com/photo/50638622/Telephone_Line_Cords_with_UK_Telephone_Plugs.jpg
Phone lines are very versatile Most popular applications include:
◦ Sending faxes from computers◦ Making phone calls from computers◦ Connecting to the Internet via dial-up connection
As broadband connections become more affordable dial-up will continue to be phased out
Dial-up connection peaks at a speed of 56 Kbps 234,372,000 Internet users as of Nov 2009
◦ 73,123,400 Internet broadband connections as of June 2009 (source http://www.internetworldstats.com/america.htm)
◦ Leaving 160 million plus potentially still using dial-up
connections
No, not everything needs a power cord!! All computers, including laptops, need their own power cord Many peripherals need a separate power
cord, however some may run off of USB supplied power
Power cords are fairly uniform but proprietary power cords and power packs, especially for laptops, do exist
Photo credit: http://climate.sdstate.edu/howto/vrg101/black%20power%20cord.jpg
There are two main types◦ Molex◦ SATA
Molex was developed in the 1950s, first used in computers in the late 1970s
It is a 4 pin connector Standard on all PATA drives, and most motherboards SATA was developed in 2003 and is taking the place
of Molex SATA is more of a versatile power adapter, allowing
for hot-swapping and it can only be inserted in one specific way
Photo credit: http://en.wikipedia.org/wiki/Molex_connector
Photo credit: http://www.addictivetips.com/wp-content/uploads/2008/09/imageview.jpghttp://www.microsoft.com/library/media/1033/windowsxp/images/using/mce/expert/sound_sound_card.jpg
Computer audio wires are essential for providing sound
Typically wires with green plugs are for speakers, wires with pink plugs are for microphones, and wires with blue plugs are for line-in
There are also wires that support 5.1, 6.1, and 7.1 surround sound
Newer audio wires include digital optical and coaxial cables, as well as HDMI which can transmit high definition video as well as
sound
Photo credit: http://en.dogeno.us/wp-content/uploads/vga2.jpg
Stands for “Video Graphics Array” or “Super Video Graphics Array” Transmits an analog video signal VGA maximum resolution is 800 x 600 VGA is considered the lowest common
denominator that all PC graphics hardware support
SVGA improves on VGA, and covers a large range of display standards
SVGA maximum resolution is 1027 x 768 Still widely used for a large number of monitors,
including flat screen monitors Has been surpassed by DVI connections
S-Video stands for Separate Video The wire transmits video data only, no sound S-Video can transmit a slightly higher analog
resolution picture than traditional composite video
Allows for a computer to be hooked up to a monitor/TV peripheral
Can not transmit high definition video signals Has been replaced with DVI and HDMI wires
Photo credit: http://www.zpluscable.com/images/products/prem-svideo-end.jpg
Stands for Digital Visual Interface Transmits a digital video signal First produced in 1999 Direct replacement of VGA/SVGA
connections Supports a maximum resolution of 3840 ×
2400 Already starting to be replaced by such
connections as HDMI and DisplayPort
Photo credit: http://www.cablek.com/client_file/upload/image/dvi-cable-pic.jpg
Originally designed in 1986 Superseded by SATA in 2003 Is an internal connection standard for hard
drives, floppy drives, and optical drives Maximum data transfer rate is 133 Mbps Looks like a ribbon cable Was commonly called ATA or IDE cables until
approximately 2003 when SATA was released and it was retroactively called PATA to
differentiate between the two cables
Photo credit: http://en.wikipedia.org/wiki/File:Ata_20070127_002.jpg
SATA (Serial Advanced Technology Attachment) was created in 2003
Reduces amount of cables from 80 in PATA to just seven
Is used for:◦ Internal computer parts connection◦ External computer peripherals connection
(eSATA)◦ Power supply connection
SATA has a maximum data transfer rate of 1.5 Gbps, SATA II is 3 Gbps, SATA III is 6 Gbps
Another plus is that SATA connections are
hot-swappablePhoto credit: http://www.sierra-cables.com/Cables/Images/SATA-Signal-Cable-1.jpg
Photo credit: http://gallery.techarena.in/data/513/sata-ide_lg.jpg
http://en.wikipedia.org/wiki/Universal_Serial_Bus http://www.usb-ware.com/firewire-vs-usb.htm http://blog.makeitwork.com/audio-video-cables-explained/ http://computer.howstuffworks.com/parallel-port1.htm http://www.howstuffworks.com/serial-port.htm http://en.wikipedia.org/wiki/S-Video http://en.wikipedia.org/wiki/Video_Graphics_Array http://en.wikipedia.org/wiki/Super_Video_Graphics_Array http://en.wikipedia.org/wiki/Digital_Visual_Interface http://en.wikipedia.org/wiki/Parallel_ATA http://en.wikipedia.org/wiki/Serial_ATA http://computer.howstuffworks.com/ethernet.htm http://en.wikipedia.org/wiki/Molex_connector