Need for Technical Processing:

The need for technical processing has been  brought about by a number of reasons/factors. They are: 

1) Accelerated  growth of information  resulting in the production of a large number of documents and, consequently, user problems of inadequate time for reading and assimilation. 

2) Complexity in subject specialisation coupled with the interdisciplinary nature of information.

3) Demand from readers for better services, etc. 

In addition, the pressures of the Five Laws of Library Science, especially the second and third laws have forced librarians to seek new procedures in the arrangement and management  of the collection. This has  resulted in the development of new tools called Vocabulary Control Devices -  such as,  Classification Scheme, Thesauri, Catalogue Codes, Subject Headings Lists, etc --for the purpose of classification and indexing of information. Some of the advantages of technical processing are: 

• It helps in the systematic arrangement of documents / information and thereby facilitates storage and retrieval whenever necessary. 
• It facilitates analysis of queries put by users 
• It helps in the preparation of information services and products.