Past exam of the year 1 of the computer science course of the University of Oxford / 2015 / Digital systems, linear algebra, introduction to formal proof (resit) / 2 / c

The four CMOS inverters use $4\cdot 2$ transistors, the four two-input NAND gates use $4\cdot 4$, and the four-input NAND gate uses $8$. Therefore this particular design uses