Eurotech Appliances CPU-1461 - Manual (Page 62)

62 PC/104-Plus – CPU-1461 Module
C
CELLULAR
Refers to communications systems where a geographic region is divided into sectors, called cells.
CPU
CPU (Central Processing Unit) is the heart (computational and control unit) of a computer.
This device interprets and executes instructions.
D
DMA
The Direct Memory Access is a technique for transferring data from the memory to a device. Data doesn’t
pass through the CPU.
DEVICE
It is any circuit performing a specific function.
E
ECP
Extended Capabilities Port. An asynchronous, 8-bit–wide parallel channel defined by IEEE 1284-1944 that
provides PC-to-peripheral and peripheral-to-PC data transfers.
EEPROM
EEPROM (also known as E
2 PROM) stands for Electronic Erasable Programmable ROM.
This type of memory can be re-programmed by electronic signals.
EPROM
EPROM stands for Erasable Programmable ROM.
This type of memory can only be erased by ultra-violet (UV) light.
ETHERNET
It is a type of Local Area Network (LAN) architecture. Ethernet supports data transfer rates of 10Mbps.
A newer version of Ethernet, called Fast Ethernet (or 100Base-T), supports data transfer rates of 100 Mbps.
And the newest version, Gigabit Ethernet supports data rates of 1 Gbit (1000 megabits) per second.
F
FDC
Floppy Disk Controller. A special-purpose chip and associated circuitry that directs and controls reading from
and writing to a computer’s disk drive.
FIFO
First in/first out. A method for processing a queue in which items are removed in the same order in which
they were added.
Flash ROM
Flash ROM (like EEPROM) can be re-programmed by electronic signals. Usually a Flash ROM has a
capacity of 1MB.Into this memory usually resides BIOS and other useful programs or instructions.