SAM
(Sequential Access Memories) The Sequential nature means that you
(or more likely the hardware involved) will have to
read a long sequence of data in order to get to
actually data wanted.
Hard-drives
- R/W - Fast - Volatile - Magnetic based
USB-keys
- R/W - Relative fast - Volatile - Flash ROM
based
Floppy-drives
- R/W - Slow - Volatile - Magnetic based - (If
they still exists)
CD/DVD-Drives
- R - Relative fast - Volatile - Optic storage
(Can be written as well)
Backup-tapes
- R/W - Slow - Volatile - Magnetic based
RAM
(Random Access Memory) The Random Access nature means that
its possible to get any data within a few (or
single) clock-puls.
ROM
(Read Only Memory)
Per
definition must "real" ROM be factory product -
but the term used generally
PROM
- A one time user Programmable ROM
EPROM
- Erasable Programmable ROM
EEPROM
- Electrically Erasable Programmable ROM
FlashROM
- Fast programmable and more
advanced EEPROM technology
(Link)
RWM
(Read Write Memory) which most people call
RAM
(Link1)
(Link2)
Static RAM can be considered based on
D-F/Fs
(Link3)
Dynamic RAM - A "simple" way to
implement memory - a bit stored with one
capacitor and one FET transistor - A
refresh circuit required.
(Link4) Lots of new technologies
can be found on the market like DDR,
DDR2, EDO ect.
Dual Port RAM - Basically a Static RAM
with two sets of Address and Data-busses
