Knowledge in analog and digital electronics, power systems, programming C , Python and assembly for 8051 microcontrolers
You'll learn about the componentes like resistors, capacitors, inductors, diodes, transistors, and about how to use then in real circuits like power supplies, amplifiers, regulators
You'll learn about the MCU8051 pinout, programming in assembly, and the use of it's ports, interruptions, registers like timers and counters, and interfacing with LCD and 7 segments displays,
There are many companies that produce PCBs from your schematic diagram. The main are JLCPCB (in China I think), PCBPower, in India.