Module 4: PLA

The document discusses Programmable Logic Arrays (PLAs). It first introduces PLAs and compares them to other programmable logic devices like PALs. It then provides a block diagram and overview of the basic structure of a PLA. The document outlines some advantages of PLAs, such as simpler design layouts and faster testing. However, it also notes disadvantages like limited applications from product term counts. It provides examples of how PLAs can be used as counters, decoders, and for bus interfaces. In comparing PLAs to PALs, the document states that while both can implement Boolean functions in SOP form, PLAs allow programming of both AND and OR arrays whereas PALs keep a fixed OR array