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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 program that converts English- like mnemonics into machine code






2. A combined coder and decoder






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






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






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






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






7. Data Terminal equipment






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






9. 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.






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






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






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

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






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






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






16. A number given in ampere- hours determined by multiplying the current times the length of the time (h) a battery can deliver that current to a load






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






18. The basic timing signal in a digital system; a periodic waveform in which the interval between pulses equals the time for one bit; the triggering input of a flip- flop






19. A two terminal circuit containing voltage sources - current sources - and resistors can be modeled as a voltage source in series with a resistor






20. Having two opposites charge carriers within the transistor structure






21. Dual in - line memory module






22. 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.






23. The beginning address of a segment of memory






24. The number of protons in a nucleus






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






26. 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






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






28. A receiving device on a bus






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






30. 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






31. Having two stable states. Flip- flops and latches are bistable multivibrators.






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






33. A logic circuit used to add two binary numbers






34. 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






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






36. In addition - the number that is added to another number called the augend






37. The maximum value of a voltage or current






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






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






40. The inverse of opposite of a number - in Boolean algebra - the inverse function - expressed with a bar over the variable. The complement of a 1 is a 0 - and vice versa






41. Altera HDL; a nonstandard HDL






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






43. 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.






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






45. In relation to VHDL feature that permits operations to be processed in a parallel;that is operations that occur simultaneously






46. An electrical device consisting of two conductive plates separated by an insulating material and possessing the property of capacitance.






47. The main part of a computer responsible for control and processing of data; the core of a DSP that processes the program instructions






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






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






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