Architecture of programmable logic arrays and programmable array logic?

Programmable array logic is used for designing the digital circuits easily.for example large function which has several variable can easily implemented by using programmable array logic.These are the...

drawback of programmable array logic Rapid prototyping of digital circuits and perhaps for smaller scale production.

used as mux and demux , used for implement haff adder $ full adder, by program it

Using and gate - pla is programmable while pal is fixed

Programmable logic ASICs is a classification of ASICs are programmed by blowing fuses in a device to alter the logic function.