Simple Digital Systems

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Across
  1. 2. logic gates cannot source enough of this for some devices such as filament lamps
  2. 3. if the gate-source voltage of a mostfet is increased above the threshold then its resistance will do this (allowing a current to flow)
  3. 9. a gate whose output is low if both inputs are high
  4. 11. logic gates see any voltage less than around this many volts as logic 0 (low)
  5. 12. input switches always need a pull up or pull down ...
  6. 14. logic gates see any voltage more than around this many volts as logic 1 (high)
Down
  1. 1. if the gate-source voltage of a mosfet is below the threshold voltage then its resistance will be almost this (so no current will flow)
  2. 4. a gate whose output is only high if both inputs are high
  3. 5. a digital signal is said to be this if it is 0V
  4. 6. a gate whose output is the inverse of the input
  5. 7. a gate whose output is high if the two inputs are different
  6. 8. these can be used to 'drive' high power components such as filament lamps by sourcing current directly from the rail rather than from the logic gate
  7. 10. a gate whose output is low if either or both inputs are high
  8. 13. a gate whose output is high if either or both inputs are high
  9. 15. a digital signal is said to be this if it is 5V