Programmable Logic Array Full Adder Using Pla. It has programmable and array and fixed or array. A simple block diagram of a pla is given below.
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Block diagram of pla the inputs of the and gates are programmable. The following steps can be used for implementing combinational logic functions on pla 1 draw the truth table. Because only the and array is programmable it is easier to use but not flexible as compared to programmable logic array pla.
We call these sections as the and plane and the or plane.
Programmable logic array pla is a fixed architecture logic device with programmable and gates followed by programmable or gates. Programmable array logic pal is a commonly used programmable logic device pld. The fundamental components of plas are input buffer programmable and gate matrix and programmable or gate matrix. Plds have an undefined function at the time of manufacturing but they are programmed before made into use.
