- published: 02 Jun 2016
- views: 3108199
USB, short for Universal Serial Bus, is an industry standard developed in the mid-1990s that defines the cables, connectors and communications protocols used in a bus for connection, communication, and power supply between computers and electronic devices. It is currently developed by the USB Implementers Forum.
USB was designed to standardize the connection of computer peripherals (including keyboards, pointing devices, digital cameras, printers, portable media players, disk drives and network adapters) to personal computers, both to communicate and to supply electric power. It has become commonplace on other devices, such as smartphones, PDAs and video game consoles. USB has effectively replaced a variety of earlier interfaces, such as serial and parallel ports, as well as separate power chargers for portable devices.
In general, there are three basic kinds or sizes related to the USB connectors and types of established connection: the older "standard" size, in its USBÂ 1.1, 2.0, and 3.0 variants (for example, on USB flash drives), the "mini" size (primarily for the B connector end, such as on many cameras), and the "micro" size, in its USBÂ 1.1, 2.0, and 3.0 variants (for example, on most modern mobile phones).
A USB flash drive, also known under a variety of other names, is a data storage device that includes flash memory with an integrated USB interface. USB flash drives are typically removable and rewritable, and physically much smaller than an optical disc. Most weigh less than 30 grams (1.1Â oz).As of January 2013, drives of up to 512 gigabytes (GB) were available. A one-terabyte (TB) drive was unveiled at the 2013 Consumer Electronics Show and became available later that year. Storage capacities as large as 2 TB are planned, with steady improvements in size and price per capacity expected. Some allow up to 100,000 write/erase cycles, depending on the exact type of memory chip used, and have a 10-year shelf storage time.
USB flash drives are often used for the same purposes for which floppy disks or CDs were once used, i.e., for storage, data back-up and transfer of computer files. They are smaller, faster, have thousands of times more capacity, and are more durable and reliable because they have no moving parts. Additionally, they are immune to electromagnetic interference (unlike floppy disks), and are unharmed by surface scratches (unlike CDs). Until about 2005, most desktop and laptop computers were supplied with floppy disk drives in addition to USB ports, but floppy disk drives have become obsolete after widespread adoption of USB ports and the larger USB drive capacity compared to the 1.44Â MB 3.5-inch floppy disk.
A flash drive is a drive using flash memory
Secure Digital (SD) is a non-volatile memory card format developed by the SD Card Association (SDA) for use in portable devices. The standard was introduced in August 1999 as an improvement over MultiMediaCards (MMC), and has become the de facto industry standard.
Secure Digital includes four card families available in three different form factors. The four families are the original Standard-Capacity (SDSC), the High-Capacity (SDHC), the eXtended-Capacity (SDXC), and the SDIO, which combines input/output functions with data storage. The three form factors are the original size, the mini size, and the micro size. Electrically passive adapters allow a smaller card to fit and function in a device built for a larger card.
There are many combinations of form factors and device families, although as of 2013, the prevailing formats are full- or micro-size SDHC and full or micro SDXC.
The SDA uses several trademarked logos to enforce compliance with its specifications and assure users of compatibility.
How To FIX/Repair A Corrupted USB Flash Drive or SD Card Sometimes a wonderfully smart USB drive will become corrupt owing to invalid information within the Master Boot Record (MBR) or Partition Boot Record (PBR) or directory structure on the USB drive itself. Once this went on, and you then insert the USB drive into a USB port of your Windows laptop, Windows or a utility like RMPrepUSB might become unresponsive once accessing that device. If this happens there's NO ought to THROW THE USB turn back - you'll be able to FIX IT! In this urdu/hindi tutorial i will tell you exactly how to fix How To FIX/Repair A Corrupted USB Flash Drive or SD Card â–º Facebook: https://www.facebook.com/tacademy/ â–º Twitter: https://twitter.com/tamoorpardasi â–º Google+: https://plus.google.com/u/1/+TamoorPar...
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This video will show you 4 Amazing magic tricks with USB. Hope you like it. Songs: 1 - Close_My_Mouth - https://www.youtube.com/watch?v=z_L_An2k6Co 2 - Cologne 1983 - https://www.youtube.com/watch?v=Yp_449uIDmU 3 - Beat your competition - https://www.youtube.com/watch?v=nOtuAzsMAuc 4 - Believe it - https://www.youtube.com/watch?v=3K2f0EjBGv8
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Making usb flash drive that have combination lock,and if you know the combinantion you can use it.Simple components like switches,one led and usb male connector are needed to build this gadget.
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I WRITE TO claim a lost identity, of me
Ooh - I leave a message for you all
Written here the fear that are my
Destiny you see
Come behold madness you never saw
No love for killer babies
My blood is written on your walls
Oh it's time I leave ya now
My locomotive rages
Oh no you never heard me call
Oh I know you'll hear me now
I feel the rage that brings
The fame of that I need
I've now a face forever more
Living with the fears
That hear those fantasies in me
Come an see sadness you never saw
No love for killer babies
My pain is written on your walls
Oh it's time I leave you now
Mama look what you made me
Your locomotive killer calls
Oh I know you hear me now
Don't wait for me
Don't hate for me
Don't ask of what went wrong
Don't pray for me or wonder why
You've known this all along
I've sinned for you
I envy you
Your pain I'll know
I wanted love, you gave me none
I've come to take you home
Cause I've gone to meet my maker
I'm locomotive man
One killer baby's come to call
Cause I've gone to meet my maker
I am you Loco Man
I'm coming down to take you all
Oh God I'm coming
Read my words I'm coming
I got a gun I'm coming
You won't hear me coming