Computer Aided Design and Manufacturing

1Computers in Manufacturing

1.1 Introduction

1.1.1 Importance of Manufacturing

The life quality of human being relies on the availability of products and services from primary industry, secondary industry, and tertiary industry. According to the three‐sector theory (Fisher 1939), the primary industry relates to the economic activities to extract and produce raw materials such as coal, wood, and iron. The secondary industry relates to the economic activities to transfer raw or intermediate materials into goods such as cars, computers, and textiles. The tertiary industry relates to the economic activities to provide services to customers and businesses. The secondary industry supports both the primary and tertiary industries, since the businesses ...