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Which gives scalable design rules ?

  • A.Lambda rules
  • B.Micron rules
  • C.Layer rules
  • D.Thickness rules

Answer: A

Scalable design rules are given by lambda rules.

Mead and Conway's lambda-based rules express every layout dimension, such as minimum widths, spacings and overlaps, as a multiple of a single unit \(\lambda\), roughly half the minimum feature size. When the process shrinks, only the value of \(\lambda\) changes, and the same layout can be scaled to the new technology.

Micron rules give absolute dimensions in micrometres for one particular process, so they are more precise but not scalable. 'Layer rules' and 'thickness rules' are not names of a scalable rule system.

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