Wikipedia
Inspec is a major indexing database of scientific and technical literature, published by the Institution of Engineering and Technology (IET), and formerly by the Institution of Electrical Engineers (IEE), one of the IET's forerunners.
Inspec coverage is extensive in the fields of physics, computing, control, and engineering. Its subject coverage includes astronomy, electronics, communications, computers and computing, computer science, control engineering, electrical engineering, information technology, physics, manufacturing, production and mechanical engineering.
Inspec was started in 1967 as an outgrowth of the Science Abstracts service. The electronic records were distributed on magnetic tape. In the 1980s, it was available in the U.S. through the Knowledge Index, a low-priced dial-up version of the Dialog service for individual users, which made it popular.
Access to Inspec is currently by the Internet through Inspec Direct and various resellers.