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






2. An array of AND gates consisting of a matrix of programmable interconnection






3. Stands for Complementary Metal-Oxide Semiconductor and is implemented with a type of field transistor






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






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






6. In a division operation the quantity that is being divided






7. One current path in a parallel circuit; a current path that connects two nodes






8. The unit of electrical current






9. 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






10. In a PLD - a matrix formed by rows of product- term lines columns of input lines with a programmable cell at each junctions. In VHDL - an array is an ordered set of individual items called elements with a single identifier name.






11. Characterized by ten states or values






12. The range of frequencies for which the current (or output voltage) is equal to or greater than 70.7% of its value at the resonant frequency that is considered to be passed by a filter.






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






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






15. American National Standards Institute






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

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17. A binary digit - which can be either 1 or 0






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






19. A group of eight bits






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






21. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






22. In addition (ORing) and multiplication (ANDing) of two variables the order in which the variables are ORed or ANDed makes no difference






23. In Boolean algebra - the AND operation






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






25. Having two directions. the stored data can be shifted right or left






26. 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






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






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






29. The maximum value of a voltage or current






30. A receiving device on a bus






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






32. Digital audio tape; a type of magnetic tape format






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






34. An energy source that uses a chemical reaction to convert chemical energy into electrical energy.






35. A device used to convert an analog signal to a sequence of digital codes






36. A digital circuit capable of counting electronic events - such as pulses - by progressing through a sequence of binary states.






37. A circuit that selects data from several inputs one at a time in a sequence and places them on the output; also called a multiplexer.






38. The opposition of a capacitor to permit current; the reciprocal of capacitive reactance. The unit is the siemens.






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






40. The process of converting an analog signal to digital form






41. A electrical property of matter that exist because of an excess or a deficiency of electrons. Can be either positive or negative






42. A type of semiconductor memory that stores data in the form of charge packets and is serially accessed






43. The process of rippling an input carry to become the output carry in a full- adder when either or both of the input bits are 1's and the input carry is a 1






44. One of the three regions in a bipolar Junction transistor(North junction of NpN)






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






46. The mathematics of logic circuits






47. A transformer in which the primary and secondary are in a single winding






48. A circuit with a complete current path






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






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