Question

Why would anyone use programmable logic devices (PLD, PLA, PAL, CPLD, FPGA, etc.) in place of traditional "hard-wired" logic such as NAND, NOR, AND, and OR gates?

Answer 1

Programmable logic devices (PLDs) provide flexibility, cost savings, and rapid prototyping compared to traditional "hard-wired" logic gates.

Step-by-step explanation:

Programmable logic devices (PLDs) such as programmable array logic (PAL), programmable logic array (PLA), complex programmable logic device (CPLD), and field-programmable gate array (FPGA) are used in place of traditional "hard-wired" logic gates like NAND, NOR, AND, and OR gates for several reasons.

Firstly, PLDs offer flexibility and reprogrammability, allowing users to change the logic design without rewiring the circuit. This saves time and effort, especially for complex circuits.

Secondly, PLDs can implement multiple logic functions within a single device, reducing the need for multiple discrete components. This leads to cost savings, reduced PCB space, and improved system performance.

Lastly, PLDs enable rapid prototyping and iterative design. With traditional logic gates, any changes to the circuit would require physical modifications. However, with PLDs, changes can be made through software, making it easier to iterate and refine the design.