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How many rows and columns are present in IC 74187?

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How many rows and columns are present in IC 74187?

(a) 128, 3

(b) 128, 4

(c) 256, 3

(d) 256, 4

I got this question during an interview for a job.

Asked question is from Read Only Memory (ROM) in chapter Memory Devices of Digital Circuits

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The correct option is (d) 256, 4

Easy explanation: IC 74187 is organised as 256 * 4, hence it has 256 rows and 4 columns.

IC 74187 is of 1024 bits because it is organized as 256 * 4.

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