Electronics Design

components
   inventory
   wire
   switch
      button
      slide
   button
   resistor: I=V/R
   capacitor: C = Q/V, I = C dV/dt
      unpolarized
      polarized
   crystal, resonator
   inductor: V = L dI/dt
   diode: current from anode to cathode
      PN
      Schottky
      Zener
      LED
   transistor
      bipolar: collector, emitter, base current gain
      mosfet: source, drain, gate resistance
   battery, regulator
   op-amp: differential gain, negative feedback
   microcontroller
   sensors
   actuators

circuits
   Kirchoff's laws: sum current at node, voltage around loop = 0
   power: P = I^2 R = I V
   EDA
   hierarchical, parametric drawing
   packages, footprints, component libraries
   design rules
   schematic entry, component placement, (auto)routing, simulation, fabrication
   drafting tape
   drawing
   123D Circuits Virtual Breadboard Fritzing
   Eagle Fusion 360 fab.lbr
   DesignSpark MultiSIM BLUE
   KiCad gEDA
   Altium Circuit Maker PCB
   OrCAD Cadence Synopsys Mentor Tanner Magic
   SPICE LTspice ngspice gSpiceUI
   Gnucap Qucs Oregano Multisim 
   Verilog VHDL
   kokompe pcb.cad

test equipment

assignment
   redraw the echo hello-world board,
      add (at least) a button and LED (with current-limiting resistor)
      check the design rules, and make it
      extra credit: simulate its operation
      extra credit: measure its operation