Y.E.S: CHAPTER 8 = SECONDARY STORAGE

SOLID-STATE STORAGE

Solid-state storage is a nonvolative, removable storage medium that employs integrated circuits (ICs ) rather than magnetic or optical media.
It is the equivalent of large-capacity, nonvolatile memory.
Examples include flash memory Universal Serial Bus (USB) devices and various proprietary removable packages intended to replace external hard drives.
Solid-state storage media lags behind electromechanical drives in terms of storage capacity.
Solid-state storage devices have no moving parts and are more reliable and require less power than hard disks.
For more information about solid-state storage refers to http://en.wikipedia.org/wiki/Solid-state_drive

http://viroptics.pancamo.com/2008/01/bitmicro-832gb-solid-state-soft-drive.html

FLASH MEMORY

Flash memory refers to a particular type of EEPROM, or Electronically Erasable Programmable Read Only Memory.
It is a memory chip that maintains stored information without requiring a power source.
It is often used in portable electronics, like MP3 players, and in removable storage devices.
Flash memory differs from regular EEPROM in that EEPROM erases its content one byte at a time.
Flash memory can erase its data in entire blocks, making it a preferable technology for application that require frequent updating of large amounts of data as in the case of a memory stick.
Flash memory is used in digital media players like the iPod to store and play music and video files.
Flash memory is also used to store images captured from digital cameras and then to transfer the images to desktop and other computers.
For more information about flash memory can refers to http://www.wisegeek.com/what-is-flash-memory.htm

http://www.blendsblog.com/guide/what-is-flash-memory/

USB DRIVES DRIVES

A USB flash drive consists of a flash memory data storage device integrated with a USB (Universal Serial Bus ) interface.
USB flash devices are typically removable and rewritable and physically much smaller than a floopy disk.
They are smaller, faster, have thousands of times more capacity, and are more durable and reliable because of their lack of moving parts.
There are typically four parts to a flash drive:

Male type-A USB connector – provides a physical interface to the host computer.
USB mass storage controller – implements the USB host controller. The controller contains a small microcontroller with a small amount of on-chip ROM and RAM.
NAND flash memory chip – stores data. NAND flash is typically also used in digital cameras.
Crystal oscillator – produces the device's main 12 MHz clock signal and controls the device's data output through a phase-locked loop.

Data stored on flash drives is impervious to scratches and dust, and flash drives are mechanically very robust making them suitable for transporting data from place to place and keeping it readily at hand.
Flash drives implement the USB mass storage device class so that most modern operating systems can read and write to them without installing device drivers.

USB flash drives do not include a write-protect mechanism, although some have a switch on the housing of the drive itself to keep the host computer from writing or modifying data on the drive.
USB flash drives are more expensive per unit of storage than large hard drives, but are less expensive in capacities of a few tens of gigabytes as of 2011.

http://www.engadget.com/2004/10/18/one-128mb-tomago-kudasai/
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Y.E.S