Currently I work on building a Ben Eaters 8-bit computer on breadboards. So far I have managed to build a clock, registers, a CPU (from 74181) and a 3-digit display. However I have trouble with voltage drops. My power supply is rated 5V and 2A, but on the breadboard my voltage drops to 3,5-4V. I`m an electronic amateur. I hold a PhD in economics and MA in economics and philosophy. My ambition is to understand well the basics of computers. ©