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Digital Fundamentals

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A method for the automated testing of printed circuit boards in which the board is mounted on a fixture that resembles a bed of nails that makes contact with test points






2. The normal level of a pulse waveform; the voltage level in the absence of a pulse.






3. The action of a circuit in which it accepts current into its output from a load






4. A type of IC package whose leads must pass through holes to the other side of a PC board






5. A document that specifies parameter values and operating conditions for an integrated circuits or other device






6. A reduction of the output signal compared to the input signal - resulting in a ratio with a value of less than 1 for the output voltage to the input voltage of a circuit.






7. American wire gauge; a standardization based on wire diameter






8. Having two opposites charge carriers within the transistor structure






9. A code within DOS that allows various operations on files and includes a primitive assembler; to eliminate a problem in hardware or software.






10. Sum of all currents entering a node is equal to the sum of all currents leaving the same node

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11. The VHDL unit that describes the internal operation of a logic function; the internal functional arrangement of the elements that give a device its particular operating characteristics.






12. A stage of the DSP pipeline operation in which instructions are assigned to functional units and are decoded.






13. Characteristic of cells in a Karnaugh map in which there is a single- variable change from one cell to another cell next to it on any of its four sides






14. A class of integrated logic circuits that is implemented with a type of field effect transistor






15. A method for internally testing a PLD based on the JTAG standard (IEEE std.)






16. The effect created when a signal is sampled at less than twice the signal frequency. Aliasing creates unwanted frequencies that interfere with the signal frequency.






17. The process or sequence of operations carried out to program a target device






18. A circuit (digital service) that switches digital data from one input line to several output lines in a specified time sequence






19. A complex programmable logic device that consists basically of muliple SPLD arrays with programmable interconnections.






20. A circuit with a complete current path






21. An asynchronous input used to reset a flip- flop (make the Q output 0); to place a register or counter in the state in which it contains all 0's






22. Characterized by ten states or values






23. Basic input/output system; a set of programs in ROM that interfaces the I/) devices in a computer system






24. A unit of the cross - sectional area of a wire.






25. The time from the application of a valid memory address to the appearance of valid output data






26. In a pulse waveform - the height or maximum value of the pulse as measured from its low level.






27. Transistor-Transistor Logic and is implemented with bipolar junction transistors






28. Dual in - line memory module






29. The law that states ORing several variables and then ANDing the single variable with each of the several variables and the ORing the product






30. A condition where all the load currents are equal and the neutral current is zero






31. A theorem that states that any amount of voltage sources and current sources can be combined into a single current source with a parallel resistor.

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32. Arithmetic Logic Unit; the key processing element of a microprocessor that perfoms arithmetic and logic operations.






33. Burst extended data output dynamic random- access memory






34. A resettable protective device used for interrupting execessive current in an electric circuit






35. A circuit that prevents loading of an input or output






36. Digital Signal Processor; a special type of microprocessor that processes data in real time






37. A relatively small - high- speed memory that stores the most recently used instructions or data from the larger but slower main memory






38. Dynamic random- access memory; a type of semiconductor memory that uses capacitors as the storage elements and is a volatile - read/write memory






39. A programming language that uses English like words and has a one- to- one correspondence to machine language






40. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






41. The digit generated when the sum of two binary digits exceeds 1






42. Bipolar junction transistor; a semiconductor device used for switching or amplification. A BJT has two junctions - the base- emitter junction and the base- collector junction






43. A series of bits describing a final design that is sent to the target device during programming






44. The process of producing an output carry in full- adder when both input bits are 1s.






45. The portion of the CPU that interfaces with the system buses and fetches instructions - reads operands - and writes results.






46. A logic gate that produces a High output only when all of the inputs are HIGH






47. A nominally continuous electrical signal that varies in amplitude or frequency in response to changes in sound - light - heat - position - or pressure.






48. An arrangement of electrical and/or electronic components interconnected in such a way as to perform a specified function






49. A type of inductor used to block or choke off high frequencies






50. A program that converts English- like mnemonics into machine code