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What are the advantages of a programmable logic device (PLD) over fixed-function ICs? 1. Reduction in board space requirement. 2. Reduction in power requirement. 3. Design security.

What are the advantages of a programmable logic device (PLD) over fixed-function ICs? 1. Reduction in board space requirement. 2. Reduction in power requirement. 3. Design security. Correct Answer 1, 2 and 3

Programmable logic device (PLD):

It is an IC with a large number of logic gates, which is programmed by software to perform a specific digital logic function. And it can be changed according to the application.

Examples: PLA, PAL, FPLA, PROM, GAL, FPGA, etc.

Fixed functional ICS:

It is an ICs in a compact form that is designed to perform for fixed logic applications and it can not be changed after manufacture.

Examples: IC-555, IC-741, Johnson counter, full adder, parallel adder, etc.

Advantages of PLD over fixed functional ICs:

PLD

Fixed functional ICs

Programmable and less time required to design

Not programmable

and more time

required to design

Small board space needed

Large board space required

Less power required to operate this PLD

Higher power required to operate this

Special testing and

verification tools

required

Manual testing and verification

Software security is more during the design

Less security due

to manual design.

 

So, the correct option is 4.

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