Electronics with a "P"

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Across
  1. 2. Programmable Array Logic, a type of programmable device
  2. 4. The negative and positive side of devices
  3. 6. A charge, either positive or negative, having the possibility of moving electrons and doing work.
  4. 8. The relative position of one signal relative to another signal.
  5. 9. Pulse Width Modulation; Technique to control the ratio of time that a signal spends on vs. how long it spends off
  6. 11. 2 words The numbering system used to identify pins on a chip. They go from the upper left corner of the chip, counter-clock wise, beginning with the number 1
  7. 12. A component that produces an output when light falls on it
  8. 14. 2 words The pin numbers on an IC which correspond to the gate or device location.
  9. 15. 2 words The height of the wave above zero
  10. 17. Programmable Logic Device, a type of chip which can be programmed, used, erased and then reprogrammed
  11. 18. A mathematical abbreviation which means times 10 to the negative 12th power
  12. 19. A sudden change from one logic level to another, followed after a time by a sudden change back to the original level.
  13. 20. A metal connection on an IC chip
  14. 21. 2 words The total width of the pulse for a periodic wave form
Down
  1. 1. 3 words Technique to control the ratio of time that a signal spends on vs. how long it spends off
  2. 3. 3 words Operation where several bits of data are transferred simultaneously into a counter of a register.
  3. 5. A variable resistor, a resistor whose value can be adjusted
  4. 7. 2 words A logic circuit which will give an active signal on one output line for a binary number input to the circuit. The circuit does not have a solitary output line for each possible binary number input to it as a full decoder has.
  5. 9. A positively charged particle in an atom
  6. 10. A set of inputs that are not supposed to be used
  7. 12. 2 words The edge of a signal moving from low to high
  8. 13. 2 words Delay from the time a signal is applied to the time when the output makes its change.
  9. 15. 3 words Logic expression consisting of two or more OR terms (sums) that are ANDed together.
  10. 16. The length of time it takes a periodic waveform to repeat
  11. 19. An input used to set Q = 1