Did I bring anything for show and tell? Haven't had a lot of time to rummage around the garage Brought a keyboard... Let's take a look at text2binary Forgot I wrote it Will the fan work on the space heater? Maybe... Why do data centers use 240v? Do they really? Isoptera is on 120v My bitcoin miner only runs on 240 Why are reviews of electric kettles better in Britain? Or, why is our power so weak? Add-on about busses from last time Busses, parallel vs. serial We "lanes", for PCI-X And bandwidth (chart) Meaning of DDR Separation of bus frequencies on newer boards "series of 0's" problem "bus" vs. "network" Mostly depends on scale... Routing problems in busses are minimal Gates: buffer input impedance not (inverter) and or nand (universal) nor (universal) xor xnor MOSFET (Metal Oxide Field-Effect Transistor): Usually the type of transistor in digital logic circuits Also used for amplifiers, and a few other things NMOS, CMOS, PMOS: Why does the inverter have 5 circuit diagrams? It can be made a few different ways The diagrams do present a historical progression I've been sticking with the 60's CMOS has taken over for processors and such Physical layout diagram of a gate using CMOS Back to gates: How do we build everything from nand and nor? Surely we can figure it out!