Topics in Engineering Logic contains the lectures given at the Indian Statistical Institute in Calcutta, India, during the Spring of 1959. The lectures focus on a variety of topics related to engineering logic, including the use of the logical matrix as an auxiliary to the construction of various types of codes. Elementary logical circuits for synchronous systems are also considered, with emphasis on "two-wire" systems based on static flip-flops and having various phase structures. Comprised of seven chapters, this volume begins with an introduction to the logical matrix, a form of representation of logical functions that permits rapid and clear solution of varied problems in logical design. The discussion then turns to elementary logical circuits for synchronous systems and their physical properties, with particular reference to contacts, diodes, and transistors as well as phase structures and diode-gated flip-flops for single-phase and two-phase applications. Subsequent chapters deal with a graphical approach based on the logical matrix as a method for reducing the canonic form to the two-level minimal form; codes and matrices; operational circuits; and the question of increasing reliability through structural redundance. The book concludes with several typical logical design problems, including a drum-indexing circuit and a series-parallel decimal multiplier. This monograph will be of interest to engineers.