1. Given the partial NMOS ROM decoder shown, having address inputs A2, A1, and A0 (A0 is LSB), identify the decoder output (select line) Y.

  1. Y = Y0
  2. Y = Y2
  3. Y = Y3
  4. Y = Y4
  5. Y = Y5

1 is WRONG. To identify Y, determine which value of A2A1A0 will cause the transistors T2T1T0 to be OFF (nonconducting).

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