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A BCD to Excess 3 converter is designed using a PROM circuit. How many words does the PROM contain?

A BCD to Excess 3 converter is designed using a PROM circuit. How many words does the PROM contain? Correct Answer 16

A BCD to Excess 3 converter must have 4 inputs as BCD code always represents a digit in 4bit binary code. Thus a 4 input ROM will contain 24 = 16 words. Hence the right answer is 16.

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