<> used to'. Now, admittedly you don't generally see the schematics of a <> microprocesor (although I have understood minis to gate level), but <> there's nothing magic about a CPU. I have and they are really strange as many use dynamic storage cells for registers and the like. I did my EE training in the early 70s and computer meant the DEC-10, PDP-8 or the S370s behind glass. I was doing mostly analog stuff in the labs till I started squawking. They had be blinking neon lights and to pay tuition I was designing 4cx250 pushpull amps at 460mhz and my own UHF frequency counter. Before I'd left that I was doing 8008 designs and they were talking sequential logic. To this day my favorite two programming languages are solder and assembler. Allison