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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. 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






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






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






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






5. 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






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






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






8. An application program in development software packages that controls the design flow process and translates source code into object code in a format that can be logically tested or downloaded to a target device






9. Burst extended data output dynamic random- access memory






10. The ability of a capacitor to store electrical charge.






11. An expression of variables and operators used to express the operation of a logic circuit






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






13. 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






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






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






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






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






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






20. A filter that rejects a range of frequencies lying between two critical frequencies and passes frequencies above and below that range.






21. A set of interconnections that interface one or more devices based on a standardized specification






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






23. A method of analog- to- digital conversion using a 1- bit quantization process






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






25. A connection at the midpoint of a winding in a transformer






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






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






28. 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






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






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






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






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






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






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






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

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






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






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






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






40. The maximum value of a voltage or current






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






42. 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






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






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






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






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






47. In Boolean algebra - the AND operation






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






49. The portion within the microprocessor that provides the timing and control signals for getting data into and out of the microprocessor and for synchronizing the execution of instructions.






50. Data Terminal equipment