Thanks a lot for the information

 

But not as much as in one of those chips!

 

Should be passing to ECMOS. The idea is to realize the registers and have Harvard architecture. From there it is just calculations with a summing part?

The CPU is primarily a digital circuit -- any analog circuits are generally very few and for purposes peripheral to the CPU's job. The overwhelming majority of modern CPU's use CMOS circuits in which transistors are used as switches to either connect nodes to a HI voltage or a LO voltage. Each switch serves a particular role in the logic implemented by the CPU. The more things you want the CPU to do, the more switches (transistors) you need.