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






2. The beginning address of a segment of memory






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






4. Data Communications equipment






5. A interconnection of electrical components designed to produce a desired result. A basic circuits consists of a source - a load and an interconnecting current path.






6. Burst extended data output dynamic random- access memory






7. A one- way group of conductors from the to a memory - or other external device - on which the address code is sent






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






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






10. 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.






11. 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






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






13. The graph of a filter's frequency response showing the change in the output voltage to input voltage ratio expressed in dB as a function of frequency for a constant input voltage






14. 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.






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






16. One of the three regions in a bipolar junction transistor






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






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

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19. The actual current in a branch






20. The maximum value of a voltage or current






21. American Standard Code for Information Interchange; the most widely used alphanumeric code.






22. A digital circuit device that converts coded information into another (familiar) or noncoded form






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






24. 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






25. An instrument that can specify each of the other instruments on the bus as either a talker or a listener for the purpose of data transfer.






26. Data Terminal equipment






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






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






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






30. In Boolean algebra - the AND operation






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






32. American National Standards Institute






33. 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.






34. 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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35. A basic logic operation in which a true(high) output occurs only when all the input conditions are true (high)






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






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






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






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






40. 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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41. A unit of logic in an FPGA that is made up of multiple smaller logic modules and a local programmable interconnect that is used to connect logic modules within the CLB






42. Consisting of numerals - letters - and other characters






43. The ratio of pulse width to period expressed as a percentage






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






45. A group of eight bits






46. An electrical instrument used to measure current






47. A notational system for logic symbols that specifies input and output relationships thus fully defining a given function






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






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






50. A type of counter in which each stage is clocked from the output of the preceding stage.