Using and gate - pla is programmable while pal is fixed
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 type of PLD's programmable logic devices.
PLA is programmable logic array while PAL is Programmable Array Logic. PLA is a kind of programmable logic device used to implement combinational logic circuit. It has Programmable AND Gate linked with Programmable OR Gate. PAL is an combinational PLD that was developed to overcome certain disadvantage of PLA. PLA shows longer delay due to additional fusible links which results from using two programmable array and increase circuit complexity. Thus, PAL is used which is less complex and fast to implement. PAL consists of programmable AND linked with fixed OR.
AND array is used for developing digital circuit it is used in PLA programmable logic array and PAL programmable array of logic to implement the function. the number of and array will depend on how long you has function to be implemented.These are Digital circuits.
AND array is used for developing digital circuit it is used in PLA programmable logic array and PAL programmable array of logic to implement the function. the number of and array will depend on how long you has function to be implemented.These are Digital circuits.
FPGA - Field-programmable gate array is a semiconductor device containing programmable logic components called "logic blocks", and programmable interconnects.
drawback of programmable array logicRapid prototyping of digital circuits and perhaps for smaller scale production.
Programmable Logic Array?
FPGA - Field Programmable Gate ArrayA field-programmable gate array is a semiconductor device containing programmable logic components called "logic blocks", and programmable interconnects.
used as mux and demux , used for implement haff adder $ full adder, by program it
pla - programmable AND , programable OR pal - programmable AND , fixed OR
PLA:-Programmable logic array.In case of pla both AND & OR plane are programmable but in case of PAL(programmable array logic) AND plane are programmable while OR plane is fixed and in case of PROM AND plane is fixed and OR plane is programmable and in case of ROM both matrix are fixed.
Use a lookup table.