Awesome, thanks for the info.
The total size of the Hack Computer is primarily for the memory requirement: 256 Kbits for RAM, 128 Kbits for Screen and 512 Kbits for ROM.
The CPU can be done in 1160 2-input Nand gates. In CMOS, each Nand requires 4 transistors.
An actual CMOS implementation could take advantage of other logical gate types, and transmission gates, to substantially reduce the transistor count.
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