retagged by
530 views
0 votes
0 votes


A programmable device (PROM) is

(a) programmable OR and fixed AND array

(b) programmable AND and fixed OR array

(c) programmable AND and programmable OR array
(d) none

retagged by

2 Answers

1 votes
1 votes

PROM

PAL

PLA

Definition

Programmable ROM

Programmable Array Logic

Programmable Logic Array

AND array

Fixed

Programmable

Programmable

OR array

Programmable

Fixed

Programmable

Number of Minterms

All minterms are created.

According to function OR is programmed

Simple implementation

Not flexible

For each OR gate same minterm should be implemented  separately

Only needed minterms are created using AND array.

One minterm can be shared among all OR gates.

Negation of minterms are done in OR array using EXOR gates.

So answer is A

Related questions

0 votes
0 votes
1 answer
1
sh!va asked Mar 2, 2017
899 views
Which of the following represents the Moore model for sequential circuits?
0 votes
0 votes
1 answer
3
sh!va asked Mar 2, 2017
2,382 views
In a ripple counter how many changes in state happen when count changes from 7 to 8?(a)$1$(b)$2$(c)$3$(d)$4$
3 votes
3 votes
2 answers
4
sh!va asked Mar 2, 2017
6,972 views
Minimum number of 2-input NAND gates that will be required to implement the function: Y = AB + CD + EF is(a) 4(b) 5(c) 6(d) 7