bus
   asynchronous
      RS-232, RS-422, RS-485
      components video
      hello.bus.45.bridge.cad board traces interior
      hello.bus.45.node.cad board traces interior
      hello.bus.45.c makefile
   synchronous
      SPI
      I2C,TWI

OSI layers
   7: application (HTTP)
   6: presentation (SSL)
   5: session (RPC)
   4: transport (TCP, UDP)
   3: network (IP)
   2: data link (MAC)
   1: physical (PHY)

physical media
   capacity
      bandwidth * log_2 (signal/noise)
   wired
      single-ended, differential, powerline
      open collector, open drain
      transmission (pass) gate, tri-state
      transmission line
      waveguide
      TIA RS232, 422, 485
      802.3 ethernet
         chip module
      SONET optical fiber
   wireless
      RF
         FCC Part 15 ISM
         802.11 Wi-Fi
         802.15 ZigBee
         6LoWPAN
         Bluetooth
      optical
      acoustic

modulation
   PCM: Pulse-Code Modulation
   PPM: Pulse-Position Modulation
   OOK: On-Off Keying
   FSK: Frequency-Shift Keying
   BPSK: Binary Phase-Shift Keying
   QAM: Quadrature Amplitude Modulation
   OFDM: Orthogonal Frequency-Division Multiplexing
   FHSS: Frequency-Hopping Spread Spectrum
   DSSS: Direct-Sequence Spread Spectrum
   UWB:  Ultra-WideBand
   
channel sharing
   ALOHA
   Master-Slave
   Token Ring
   TDMA: Time-Division Multiple Access
   FDMA: Frequency-Divsion Multiple Access
   CSMA: Carrier-Sense Multiple Access
      CD: Collision Detection
      CA: Collision Avoidance
      1-persistent: transmit when clear
      nonpersistent: random backoff
      p-persistent: probability to transmit
   CDMA: Code-Division Multiple Access
   MIMO: Multiple-Input Multiple-Output
   "PDMA": Physical-Division Multiple Access

errors
   detection, correction
   block, convolution codes
   parity, checksum, Hamming, Reed-Solomon, Turbo

networking
   Internet protocols
      IPv4, IPv6
      DNS DHCP
      SLIP
      UDP, TCP
      HTTP
      BGP AODV ROLL
      sockets slattach Wireshark
      Internet 0
         clicks
         implementations
         i0.3.IO.44.cad i0.3.IO.44.thtpv4.asm
         i0.3.serial.44.cad i0.3.serial.44.packetv4.asm
         i0.3.hub.4.cad
         thtpv4.py
   asynchronous packet automata (APA)
      source routing + network coordinates + back-pressure flow-control + synchronous communication
      components video
      apa.ftdi.cad board traces interior apa.ftdi.c makefile
      apa.io.cad board traces interior apa.io.c makefile
      apa.c apa.h
      apa.py

RF
   radios
      oscillator, mixer, PA, LNA, IF, I/Q, demod, baseband, filters
   antennas
      Q, antenna gain, impedance matching
      FabFi
   modules
      Sagrad SG901
      TI LMX9830SM
      Linx TRM-433-LT
      Digi XBee
   single-chip
      Atmel AT86RF230-ZU
      Micrel MICRF102YM MICRF008YM
      Microchip MRF49XA-I/ST
         hello_radio
   software radio

assignment
   build a wired &/or wireless network with at least two nodes