Download Chapter 4 - Connectors

Dual In-Line Package (DIP): A semiconductor package configuration consisting of a rectangular plastic case with
two rows of pins, one row on each lengthwise side.
Dynamic Bus Sizing: The ability of the Intel386EX microprocessor, via a dedicated signal from the memory/bus controller, to engage 16-bit to 8-bit conversion cycles and adjust wait states when accessing an 8-bit device.
Dynamic Random Access Memory (DRAM): Semiconductor RAM memory devices in which the stored data will
not remain permanently stored, even with the power applied, unless the data are periodically rewritten into
memory during a refresh operation.
E
Electrically Erasable Programmable ROM (EEPROM): Specifically, those EPROMs which may be erased electrically as compared to other erasing methods.
Erasable Programmable ROM (EPROM): A semiconductor ROM device capable of being erased and reprogrammed by the user as often as desired. Once programmed, the EPROM is a nonvolatile memory that will
hold its stored data indefinitely.
Extended Data Out (EDO): A type of DRAM that allows higher memory system performance since the data pins are
still driven when CAS# is de-asserted. This allows the next DRAM address to be presented to the device
sooner than with Fast Page Mode DRAM.
Extended Memory: The RAM address space, in a computer so equipped, above the 1 MB level.
External Device: A peripheral or other device connected to the computer from an external location via an interface
cable.
F
Fast Page Mode (FPM): A “standard” type of DRAM that is lower performance than EDO but is less expensive.
Fixed Disk: A hard disk drive or other data storage device having no removable storage medium. Fixed disk storage
devices use inflexible disk media and are sealed to prevent data loss due to media surface contamination.
Fixed disks generally provide the most storage space for a given cost when compared to semiconductor, tape,
and other popular mass storage technologies.
Flash Boot Device (FBD): A flash memory device containing the computer’s BIOS. In the Baby-AT baseboard, a 512
KB Intel 28F400BV-T semiconductor flash memory containing the system and video BIOS images, the BIOS
initializing code and the recovery code which allows self hosted reflashing.
Flash Card: A removable read/write flash storage device closely resembling a credit card in size and able to hold several megabytes of data.
Flash Memory: A fast EEPROM semiconductor memory typically used to store firmware such as the computer BIOS.
Flash memory also finds general application where a semiconductor non-volatile storage device is required.
Flash Recovery: See BIOS Recovery.
Flash Update: See BIOS Update.
Force Update: See BIOS Recovery.
G
Gigabyte (GB): One billion bytes; 2 30 = 1,073,741,824 to be exact.
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