A major disadvantage of the mask ROM is that ____________(a) It is time consuming to change the stored data when system requirements change(b) It is very expensive to change the stored data when system requirements change(c) It cannot be reprogrammed if stored data needs to be changed(d) It has an extremely short life expectancy and requires frequent replacementI had been asked this question in semester exam.This intriguing question comes from Read Only Memory (ROM) in division Memory Devices of Digital Circuits

A major disadvantage of the mask ROM is that ____________(a) It is tim

1.	A major disadvantage of the mask ROM is that ____________(a) It is time consuming to change the stored data when system requirements change(b) It is very expensive to change the stored data when system requirements change(c) It cannot be reprogrammed if stored data needs to be changed(d) It has an extremely short life expectancy and requires frequent replacementI had been asked this question in semester exam.This intriguing question comes from Read Only Memory (ROM) in division Memory Devices of Digital Circuits
Answer» Right choice is (c) It cannot be reprogrammed if stored data needs to be CHANGED The best EXPLANATION: A major disadvantage of the MASK ROM is that it cannot be reprogrammed if stored data needs to be changed. PROM stands for Programmable Read Only Memory in which the ROM can be externally programmed by the USER. EPROM stands for Erasable Programmable Read Only Memory, where the ROM and be cleared and re-programmed.

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