Which are the programmable logic devices?

Types of Programmable Logic Devices

  • Programmable Logic Array (PLA)
  • Programmable Array Logic (PAL)
  • Generic Logic Array (GLA)
  • Complex Programmable Logic Device (CPLD)
  • Field Programmable Gate Array (FPGA)

What are programmable digital devices?

A programmable logic device (PLD) is an electronic component used to build reconfigurable digital circuits. Unlike digital logic constructed using discrete logic gates with fixed functions, a PLD has an undefined function at the time of manufacture.

What is logic device in digital electronics system?

A Digital Logic Gate is an electronic circuit which makes logical decisions based on the combination of digital signals present on its inputs. Digital logic gates can have more than one input, for example, inputs A, B, C, D etc., but generally only have one digital output, (Q).

What are the three major types of programmable logic devices?

Generally, programmable logic devices can be described as being one of three different types:

  • Simple programmable logic devices (SPLD)
  • Complex programmable logic devices (CPLD)
  • Field programmable logic devices (FPGA)

Where are PLD used?

They are programmable electronic components that can be used to build digital circuits. The complete family is called PLD (Programmable Logic Device). Their main use is to minimize the amount of digital integrated circuits required for a certain application, and thus lower the cost and size of a board.


Since PROMs are used in logic designs these are also referred as PLDs. Advantages of ROM as a PLD are as follows, 1) As no minimization of logic circuits is needed the circuits can be designed easily. 2) It is possible to modify the circuit faster. 3) These are high speed as compared to discrete SSI/MSI circuits.

Why do we need programmable logic devices?

Businesses around the world use PLCs to automate their most important processes. A PLC takes in inputs, whether from automated data capture points or from human input points such as switches or buttons. Based on its programming, the PLC then decides whether or not to change the output.

What is a logical device?

A logical device is a repository object that represents either a physical device, such as a Nokia mobile phone, or an abstract device, such as email. Logical devices represent the interface between Wireless Edition transformers and the target devices or applications.

What is PLD and its types?

Programmable Logic Devices PLDs are the integrated circuits. They contain an array of AND gates & another array of OR gates. There are three kinds of PLDs based on the type of arrays, which has programmable feature. Programmable Read Only Memory. Programmable Array Logic.

What is PLD AND its application?