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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. In Boolean algebra - the OR operation






2. A set of conductive paths hat connects the CPU to other parts of the computer to coordinate its operations and to communicate with external devices






3. Altera HDL; a nonstandard HDL






4. Direct memory access; a method to directly interface a peripheral device to memory without using the CPU for control






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






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






7. An electrical instrument used to measure current






8. The smallest particle of an element possessing the unique characteristics of that element.






9. The phasor combination of resistive power (true power) and reactive power. The unit is the volt- amperes (VA).






10. A combination of input literals that cannot occur and can be used as a 1 or 0 on a Karnaugh Map for simplification

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11. The rotational rate of a phasor which is related to the frequency of the sine wave that the phasor represents






12. A type of bistable multivibrator in which the output assumes the state of the D input on the triggering edge of a clock pulse.






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






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






15. 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






16. The number of protons in a nucleus






17. The actual current in a branch






18. A digital code in which each of the decimal digits - 0 through 9 - is represented by a group of four bits






19. The interval of time occupied by a single bit in a sequence of bits; the period of the clock






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






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






22. A digital circuit that compares the magnitudes of two quantiities and produces an output indicating the relationship of the quantities






23. Having two opposites charge carriers within the transistor structure






24. A VHDL feature that can be used to predefine the logic function for multiple use throughout a program or programs






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






26. A type of PLD nonvolatile programmable link that can be left open or can be shorted once as directed by the program






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






28. A combination of logic gates interconnected to produce a specified Boolean function with no storage or memory capability; sometimes called combinatorial logic






29. A bridge circuit that is in the balanced state as indicated by 0 V across the output.






30. A bidirectional set of conductive paths on which data or instruction codes are transferred into a microprocessor or on which the result of an operation is sent out from the microprocessor






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






32. The application of a dc voltage to an electronic device to produce a desired mode of operation






33. Information in numeric - alphabetic - or other form.






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






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






36. A program that translates an assembly language program for one type of microprocessor to an assembly language for another type of microprocessor






37. Data Communications equipment






38. The location of a given storage cell or group of cells in a memory; a unique memory location containing on byte






39. An adverse condition that could occur if two or more devices try to communicate at the same time on a bus






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

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41. 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.






42. A circuit with a complete current path






43. Data Terminal equipment






44. Having no stable state. An astable multivibrator oscillates between two quasi- stable states.






45. A measure of the ability of a reactive circuit to permit current; the reciprocal of impedance. the unit is the siemens






46. To decrease the binary state of a counter by one






47. Describes a number system with a base of ten






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






49. A group of eight bits






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