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Which of the following describes the action of storing a bit of data in a mask ROM?(a) A 0 is stored by connecting the gate of a MOS cell to the address line(b) A 0 is stored in a bipolar cell by shorting the base connection to the address line(c) A 1 is stored by connecting the gate of a MOS cell to the address line(d) A 1 is stored in a bipolar cell by opening the base connection to the address lineThis question was addressed to me in an interview.I want to ask this question from Erasable Programmable Read Only Memory topic in division Memory Devices of Digital Circuits

Answer»

Correct option is (c) A 1 is stored by connecting the gate of a MOS CELL to the address line

The EXPLANATION is: The action of storing a bit of data in a mask ROM is that when a 1 is stored by connecting the gate of a MOS cell to the address line. Mask ROMS are PROGRAMMED by the manufacturer and are CUSTOM made as per the user.



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