Rockwell Automation 1784-PCD DeviceNet Communication Card - Manual (Page 15)

Publication 1784-IN029C-EN-P - June 2001
Chapter
1
About the PCD Card
What’s in This Chapter?
Read this Chapter to familiarize yourself with PCMCIA technology and the PCD
card.
What is PCMCIA?
The Personal Computer Memory Card International Association (PCMCIA)
developed a standard for credit-card size personal computer (PC) cards. The
PCMCIA standard defines an architecture and communication method for these PC
cards.
PC cards developed under Release 1.0 of the PCMCIA standard are used for data
storage. PC cards developed under Release 2.0 of the PCMCIA standard can be used
for both I/O and data storage.
What is a PC Card?
Since personal computers have become smaller, a need for smaller storage media
developed. The PC card is a small form-factor adapter that can add memory,
storage, and I/O capabilities to these smaller computers.
Architecture
All PC cards measure the same length and width (85.6 mm x 54 mm or 3.37 in. by
2.13 in.), but differ in thickness at the center. The thickness at the connector end
along the rails is the same for all types of PC cards.
For information on: See page:
What is PCMCIA? 1-1
What is a PC Card? 1-1
What is the PCD card? 1-4