The answer is no. Today&#x27;s integrated circuits are all manufactured using extremely precise equipment not available back then. Furthermore, the designs are impossible to execute by hand and require complex software, not to mention extensive verification.<p>For a CPU like that of the Zero (ARM11), we&#x27;re talking about at the very least upwards of 100 million transistors on a single chip. Only by simulating the design can you actually catch that single incorrectly biased MOSFET. Think software debugging, but on a whole different level. Then you have all the other components on the Zero responsible for tasks ranging from power management, networking, graphics processing, clocking, sound processing, and so on.