Lesson 1.2 Introduction to Circuit Design-No Spaces

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Across
  1. 1. TTL-compatible IC that can be wired to operate in several different modes, such as a one-shot and an astable multivibrator.
  2. 3. Fraction of the total period that a digital waveform is in the HIGH state. DC = th/T (often expressed as a percentage: %DC = th/Tx100%).
  3. 4. A diagram, similar to a schematic, showing the connection of logic gates.
  4. 5. Delay from the time a signal is applied to the time when the output makes its change.
  5. 7. Type of flip-flop in which the D (data) input is the synchronous input.
  6. 8. A sequential circuit based on a latch whose output changes when its CLOCK input receives a pulse.
  7. 9. One in which amplitude varies in proportion to the sine function of an angle.
  8. 11. One style of integrated circuit package which has two rows of lead.
  9. 12. The amount of time required for one complete cycle of a periodic event or waveform.
  10. 13. Also called a NOT gate or an inverting buffer. A logic gate that changes its input logic level to the opposite state.
  11. 17. A technique of entering CPLD design information by using a CAD (computer aided design) tool to draw a logic circuit as a schematic. The schematic can then be interpreted by design software to generate programming information for the CPLD.
  12. 18. Unit of frequency. One hertz equals one cycle per second.
Down
  1. 2. An electronic circuit having many components, such as transistors, diodes, resistors, and capacitors, in a single package.
  2. 6. A piece of test equipment used to view and measure a variety of different waveforms.
  3. 9. An almost instantaneous rise and decay of voltage or current in a periodic pattern with time and with a constant peak value.
  4. 10. The part of a pulse where the logic level is in transition from a HIGH to a LOW.
  5. 11. A series of logic 1s and 0s plotted as a function of time.
  6. 14. The number of cycles per unit time of a periodic waveform.
  7. 15. The instantaneous voltage of a waveform. Often used to mean maximum amplitude, or peak voltage, or a pulse.
  8. 16. Expression An algebraic expression made up of Boolean variables and operators, such as AND (-), OR (+), or NOT (-). Also referred to as Boolean function or a logic function.