Eurotech Appliances CPU-1461 user manual C Cellular

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 E2PROM) 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.