A binary digit or bit is represented in the magneto-resistance based magnetic chip using
Explanation:
Option 1 refers to magnetic tunnel-junctions. Option 2, a capacitor refers to a conventional memory chip. Option 4 is incorrect because a matrix of wires do not represent a binary digit. They are merely used for transmitting pulses and for magnetisation to take place. The following extract, “In the NRL’s magnetic design, by contrast, each bit is stored in a magnetic element in the form of a vertical pillar of magnetisable material” makes option 3 the correct answer option. Hence, the correct answer is option 3.
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