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Chapter1 Introduction

1.8 CAD Platform

In general, we can run CAD software on three different CAD platforms: Mainframe, Workstation, and PC. When the CAD programs first became available, they could only be run on a mainframe computer. However, as the PCs have become faster and cheaper, almost all the CAD vendors have introduced a version of their CAD software that will effectively run on a Pentium or higher computer. Currently, the most popular platforms are PCs and Workstations. Popularity of Workstations stems from their ability to network easily with other computers, and also, due to their large memory storage capability. However, PC platform is still the most preferred medium for most engineers. Increasing popularity of the PC platform can be attributed to several factors, including, total user control, the speed, capability of storing large memory, ease of hardware upgrading and maintenance, and the overall reasonable cost.

CAD PLATFORMS

MAINFRAME

WORKSTATIONS

PCs

Large Data storage

Medium size data storage

Networked Expensive

Networked Relatively inexpensive

Need interface language No user control

Runs on Unix No user control

Good for Large corporations Good for small companies

Limited data storage Can be networked Inexpensive Run on MS-Windows User controlled Good for all users

Lecture Notes © by R. B. Agarwal

Computer Aided Design in Mechanical Engineering

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