Explain about programmable logic array, Computer Engineering

Assignment Help:

Q. Explain about Programmable Logic Array?

Until now individual gates are considered as fundamental building blocks from that different logic functions can be derived. With the advancement of technology integration achieved by integrated circuit technology has raised resulting in production of one to 10 gates on a single chip (in small scale integration). The gate level designs are created at gate level only however  if design is to be done employing these SSI chips design consideration required to be changed as some of such SSI chips may be used for creating a logic circuit. With VLSI and MSI we can put still more gates on a chip and can make gate interconnections on a chip also. This connection and integration brings benefits of reduced cost and size as well as increased speed. However main drawback faced in these kinds of VLSI & MSI chip is that for every logic function layout of gate and interconnection requires to be designed. Cost involved in making these custom designs is quite high. So came the concept of Programmable Logic Array which is a general purpose chip that can be readily accepted for any particular purpose.

PLA are designed for SOP form of Boolean function and comprises regular arrangements of AND, NOT and OR gate on chip. Every input to chip is passed through a NOT gate so input and its complement are available to every AND gate. Output of every AND gate is made available for every OR gate and output of every OR gate is considered as chip output. By making suitable connections any logic function can be realized in these Programmable Logic Arrays. 

2493_Explain about Programmable Logic Array.png

Figure: Programmable Logic Array

The figure (a) presents a PLA of 3 inputs and 2 outputs. Please consider connectivity points, all these points can be linked if desired. Figure (b) presents an implementation of logic function:

O0 = I0. I1. I2 + I¯0. I¯1. I¯2 and O1 = I¯0. I¯1. I¯2 + I¯0. I¯1 through PLA.


Related Discussions:- Explain about programmable logic array

What is sorted linked list, Linked list means node which is linked each oth...

Linked list means node which is linked each other with  a line. It means that every node is connected with another one. Every node of the list hold the reference of the next node.

Applications of parallel processing, Applications Of Parallel Processing ...

Applications Of Parallel Processing Parallel computing is an development of serial computing that effort to emulate what has always been the affirm of affairs in the natural wo

Appropriate name for the superclass, Suppose that your team is then asked t...

Suppose that your team is then asked to expand the system. The publisher now wishes to make other computer science publications. As a team member, you are asked to make a class tha

Explain difference between scanning and parsing, Explain difference between...

Explain difference between Scanning and parsing. Scanning and parsing: Scanning process is the process of recognizing the lexical components in a source string whereas parsin

Programming in c, Write a program to find the area under the curve y = f(x)...

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can b

Main drawbacks of cd-roms, Q. Main drawbacks of CD-ROMs? The main drawb...

Q. Main drawbacks of CD-ROMs? The main drawbacks of CD-ROMs are: It is read only thus can't be updated Access time is longer than that of magnetic disks. Very

Java''s layout managers give over traditional windowing syste, Java uses la...

Java uses layout managers to lay out components in a consistent manner across all windowing platforms. As Java's layout managers aren't tied to absolute sizing and positioning, the

Why we need the need of parallel computation, THE NEED OF PARALLEL COMPUTAT...

THE NEED OF PARALLEL COMPUTATION   With the growth of computer science, computational pace of the processors has also increased many a times. Though, there are definite constr

Design a half adder, Q. Design a half adder? In half adder inputs are: ...

Q. Design a half adder? In half adder inputs are: The augend let's say 'x' and addend 'y' bits. The outputs are sum 'S' and carry 'C' bits. Logical relationship betwee

What is computer motherboard, If you open your computers case, the motherbo...

If you open your computers case, the motherboard is the flat, rectangular piece of circuit board to which the whole thing seems to connect to for one reason or one another. It'

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd