Inspec Classification

Inspec Classification is a powerful search tool, which enables you to limit your search to predetermined sections of the Inspec Database.

The Inspec classification is divided into four sections. Codes begin with
A, B, C, D or E where:

A = Physics
B = Electrical Engineering and Electronics
C = Computers and Control  
D = Information Technology for Business
E = Production, manufacturing & mechanical engineering

The code format is typically: A7865K where

A = section of the database
  7 = highest or most general level of classification
    8 = second level of classification
       65 = third level of classification
             K = fourth or most specific level of classification (not all codes have the fourth level of classification)

You can view the Brief Outline to Inspec Classification free of charge.
Full Inspec Classification is available as a part of the Search Aids in XML, print and PDF.

Truncating Codes

On most platforms all codes starting with A78, e.g. A7865, A7865K are also indexed A78. As a result you do not have to use truncation to retrieve a group of codes starting with A78. However, if the required code is longer than three characters, you do need to use truncation. For example,

A7865 Optical properties of thin films and low-dimensional structures

A7865E Optical properties of metals and metallic alloys (thin films/low-dimensional structures)

A7865H Optical properties of elemental semiconductors (thin films/low-dimensional structures)

A7865K Optical properties of II-VI and III-V semiconductors (thin films/low-dimensional structures)

A7865M Optical properties of amorphous and glassy semiconductors and insulators (thin films/low-dimensional structures)
.

A7865P Optical properties of other inorganic semiconductors and insulators (thin films/low-dimensional structures)

A7865T Optical properties of organic compounds and polymers (thin films/low-dimensional structures)

A7865V Optical properties of fullerenes and related materials (thin films/low-dimensional structures)

in the above example, the classification code ‘a7865’ will retrieve only records which deal with optical properties of thin films and low-dimensional structures in general whereas ‘A7865?’ (where ? signifies truncation) will retrieve also all records which deal with elemental semiconductors, fullerenes, etc.

Cross-Classification

At least one classification code is assigned for the main subject matter of each record and additional codes may be assigned for subsidiary subjects.
Codes are always assigned to the most specific level possible and can be assigned from one or more of the four sections of the database depending
upon the subject matter.