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maaz azam

on 5 May 2014

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Transcript of FLASH DRIVES

By: Ammar Shaikh & Maaz Azam
Prior to Flash Drives...
Prior to flash drives, people used floppy disks to transport information between computers. The floppy disk drive reads the floppy disk and the information that is saved on it through its thin magnetic films. The invention of the flash drive was more efficient as it could be read from the computer itself. Also, the flash drive contains flash memory which can hold a higher storage capacity while being smaller.
How does it work?
USB flash drives talk with computers by means of either a standard USB 2.0 or USB 3.0 interface. Most flash drives are compatible with both USB 3.0 drives and 2.0.
USB 2.0 interfaces are different from USB 3.0 interfaces. USB interfaces have three essential connections: a power source, data lines, and a ground.
Flash drive circuit boards are covered in lots of little surface mounted components in order to divide and direct electricity to the right places.
What Is a Flash Drive?

A flash drive is a data storage device that is used to transport files from one computer to another. Flash drives includes flash memory and has generally decreased its size since its creation in the 90's. USB flash drives are used for the same purpose floppy disks and CD's are used and typically removable and rewritable.
Flash memory was first created in the mid 80's by Toshiba while flash drives were developed in the late 90's. There is still some dispute on who created the first flash drive between Sandisk and Toshiba. The break-through of the invention was the ability to connect the flash drive to the computer rather than having another device to read its memory.
Parts of a Flash Drive
Who was Involved in the Creation?
Impact of Flash Drives to Society and Environment
- Allows people to transfer data
- Very easy to use
- Small and easy to carry
- Can be used on any computer
- It made computers cheaper, and laptops lighter -- by eliminating floppy drives.
- Reduced the market for Writable and re-writ able CDs .
Future Use of Flash Drives
History of Flash Drives
Major Events
How Did it Start Out?
Where are Flash Drives today?
The most recent upgrade to flash drives has been the USB 3.0 drive. This drive allows for faster transmission of information compared to the USB 2.0 drive.
Flash drives have also expanded from small storage devices to a complete external hard drives which can store great amounts of data.
NAND flash memory was created by Dov Moran who worked for M-systems, which later in 1998 manufactured the first flash drive. There were many other technology companies that followed up the invention and created the same 8MB flash drive. The first flash drive was created in Europe and was first distributed in North America by IBM.
The invention of the USB flash drive occurred because floppy disks were only capable of holding up to 1.44MB, and due to computers and technology advancing, people felt the need to find a new solution to allow people to store larger files and being able to connect this data storage device straight to the computer and being portable.
Inside a flash drive there are essential components, and there are additional components.
Essential Components:
Standard-A USB plug
USB mass storage controller
NAND flash memory chip(s)
Crystal oscillator
Additional Components in a Typical Flash Drive:
Jumpers and Test pins
Write - Protect switches
1984: NOR flash memory was created.

1987: NAND flash memory was invented by Dov Maron.

1994: USB 1.0 was introduced.

1998: USB 2.0 was created, but was innovated.

2000: The first flash drive 2.0 was available to the public.

2001-2003: The USB flash drive increased size from 8MB to 500MB.

2005: 1GB, 2GB and 4GB USB models were now available to the public.

2006: Styles and designs of USB's changed.

2007: Storage capacity continues to grow, up to 64GB USB models available.

2008: Flash drive third generation or 3.0 was released.

2011: USB 256GB models were sold.

2011 - 2014: 512GB and 1TB USB 3.0 models are available.
Recently, the largest storage capacity USB was released, capable of storing up to 1T or 1000GB.
Also, flash memory continues to shrink in size and grow in capacity. Hard disk drive technology continues its inevitable march toward greater areal densities, and hybrid drives are being purchased in greater numbers. Hewlett-Packard (HP) is busy at work on a new type of storage, one based on fancy little things called memristors, which may hit the market in early 2015.

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