### representation | memory:

Flash memory
* Flash memories are non-volatile in nature.
* is all solid state so there are no moving parts.
  - based on an erasable and programmable memory technology
  - non-volatile meaning that no battery is required to retain data
  - nonvolatile storage that can be electrically erased and reprogrammed
  - often the single most costly component in a digital audio player
  - simply non-volatile storage memory
  - stored on a computer chip, and can be erased and updated with new information
  - the fastest-growing segment of the semiconductor industry
  - used in cameras, pagers, cellphones and other devices of that ilk
* is used in cell phones and other gear to store information
  - phones, telecommunications and other products
  - primarily in wireless and handheld devices
* is used to allow easy upgrades of the firmware to install updated or new protocols
  - ensure data retention even when the batteries run out
* nonvolatile memory that can be programmed and erased electrically.
* provides reprogrammable memory for computers, mobile phones, and many other products.
  * When power is turned off, RAM loses all its data. Flash can keep its data intact, with no power at all. Flash memory is much slower than RAM or hard drives. But it is great for small electronics because it is small and it has no moving parts.
* type of computer chip.
+ USB flash drive: Storage devices
  * Flash memory is a type of computer chip. The first flash drives had 8 megabytes of storage. Each year larger flash drives become available.

### representation | memory:

Human memory
* Human memories are by nature limited and subjective
  - in a constant state of dynamic modification
  - very fallible and tend to fade with time
* arises from complementary brain systems that are modified by experience.
* can be, in many circumstances, very accurate.
* is based in scripts and the generalization of scripts
  - one of nature's most fascinating phenomena
  - prone to elaboration and distortion over the years
  - selective and imperfect
* seems to store idea in networks, where many items are linked.
* serves as the repository of human experience.
* works by forming links or associations, between and among schemas.

Immunologic memory
* accounts for immunity, the ability to resist infection by certain pathogens.
* is the basis for immunity to specific antigens and can last for many years.

Immunological memory
* central feature of adaptive immunity and is the basis of vaccination.
* induced by a good vaccine can persist for many years.
* lasts forever.
* means it can quickly ward off attacks from intruders it has defeated before.
* underpins all vaccine strategies.

Main memory
* determines the size of a problem that can be solved on a given machine.
* is the primary bin for holding the instructions and data the processor is using.

Motor memory
* is memory
* separate, very enduring brain system.

Physical memory
* cache for virtual memory.
* is computer memory
  - essentially one big list of words
  - to reminiscence what the elements of a mixture are to a compound
* refers to storage provided by real devices.

Poor memory
* can mean that medication is missed and appointments forgotten.
* is often the result of poor concentration or trying to do too many things at one time.

Procedural memory
* includes motor skills, associations, puzzle solving skills, and so on.
* involves retention of nondeclarative skills and conditioned responses.
* is memory for HOW to do something.
* profound strength that most all persons with brain injury have retained.

Recall memory
* can also let people down when it comes to the initiation of activity.
* much deeper level of memory.