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GATE Exam  >  GATE Questions  >  PLA consists of _____.a)Programmable AND and ... Start Learning for Free
PLA consists of _____.
  • a)
    Programmable AND and fixed OR arrays
  • b)
    Programmable AND and programmable OR arrays
  • c)
    Fixed AND and Programmable OR arrays
  • d)
    Fixed AND and Fixed OR arrays
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
PLA consists of _____.a)Programmable AND and fixed OR arraysb)Programm...
PLA stands for Programmable Logic Array and it is a type of digital circuit that can be programmed to implement specific logic functions. It consists of two main components:

1. Programmable AND Array: This component consists of a matrix of AND gates, where each gate can be programmatically connected to one or more inputs. The purpose of the AND array is to generate a set of product terms based on the inputs provided.

2. Programmable OR Array: This component consists of a matrix of OR gates, where each gate can be programmatically connected to one or more product terms generated by the AND array. The purpose of the OR array is to generate the final output based on the product terms generated by the AND array.

Therefore, the correct answer to the given question is option 'B', which states that PLA consists of programmable AND and programmable OR arrays. This is because both the AND and OR arrays in a PLA are programmable, allowing for a wide range of logic functions to be implemented using a single device.

In summary, a PLA consists of programmable AND and OR arrays, which can be programmed to implement a wide range of digital logic functions.
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Community Answer
PLA consists of _____.a)Programmable AND and fixed OR arraysb)Programm...
Programmable logic array (PLA):
It is a kind of PLD (Programmable logic device) used to implement a combinational logic circuit.
1.It has a set of programmable AND gate planes which link a set of programmable OR gate planes.
Hence option (B) is the correct answer.
2.It has 2N AND Gate for N-input variable and form or Gates it has m output.
PLA Design:
The memory IC used in a digital system is selected or enabled only for the range of address assigned to it and this process is called memory decoding.
It denotes the memory to be selected for a specific address.
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The procedure given below is required to find and replace certain characters inside an inputcharacter string supplied in array A. The characters to be replaced are supplied in array oldc,while their respective replacement characters are supplied in array newc. Array A has a fixedlength of five characters, while arrays oldc and newc contain three characters each. However, theprocedure is flawedvoid find _ and _ replace (char *A, char *oldc, char * newc ) {for (int i= 0; i <5; i++)for (int j =0; j <3; j++)if (A [i] ==oldc[ j]) A [i]= newc [j] ;}The procedure is tested with the following four test cases(1) oldc = "abc", newc = "dab" (2) oldc = "cde", newc = "bcd"(3) oldc = "bca", newc = "cda" (4) oldc = "abc", newc = "bac"Q.The tester now tests the program on all input strings of length five consisting of characters‘a’, ‘b’, ‘c’, ‘d’ and ‘e’ with duplicates allowed. If the tester carries out this testing with thefour test cases given above, how many test cases will be able to capture the flaw?

The procedure given below is required to find and replace certain characters inside an inputcharacter string supplied in array A. The characters to be replaced are supplied in array oldc,while their respective replacement characters are supplied in array newc. Array A has a fixedlength of five characters, while arrays oldc and newc contain three characters each. However, theprocedure is flawedvoid find _ and _ replace (char *A, char *oldc, char * newc ) {for (int i= 0; i <5; i++)for (int j =0; j <3; j++)if (A [i] ==oldc[ j]) A [i]= newc [j] ;}The procedure is tested with the following four test cases(1) oldc = "abc", newc = "dab" (2) oldc = "cde", newc = "bcd"(3) oldc = "bca", newc = "cda" (4) oldc = "abc", newc = "bac"Q.If array A is made to hold the string “abcde”, which of the above four test cases will besuccessful in exposing the flaw in this procedure?

PLA consists of _____.a)Programmable AND and fixed OR arraysb)Programmable AND and programmable OR arraysc)Fixed AND and Programmable OR arraysd)Fixed AND and Fixed OR arraysCorrect answer is option 'B'. Can you explain this answer?
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