A Programmable Fault Testing Equipment for Combinational Networks

Abstract

This paper deals with the design and construction of a fault-testing equipment. It can be used to test any type of permanent faults of stuck-at-type, whether single or multiple, in any irredundant combinational logic circuit with loop free interconnections. The inherent programming feature enables the system to test any arbitrary combinational network of any number of input variables with a maximum of eight and with an internal structure, made up with any arbitrary type of logic blocks. The presence or absence of any fault in the network under test is readily detected.

Indexing Terms:

• Fault Testing
• Combinational networks
• Finite state recognizer