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






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






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






4. The time from the application of a valid memory address to the appearance of valid output data






5. A combined coder and decoder






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






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






8. 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






9. A semiconductor device that conducts current in only one direction






10. An electrical instrument used to measure current






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






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






13. Dynamic random- access memory; a type of semiconductor memory that uses capacitors as the storage elements and is a volatile - read/write memory






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






15. The actual current in a branch






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






17. The total number of data units(bits - nibbles - bytes - words) that a memory can store.






18. The current left after the total load current is subtracted from the total current into the circuit






19. The mathematics of logic circuits






20. 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.






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






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






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

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






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






26. Data Terminal equipment






27. 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






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






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






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






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






32. 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






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






34. Data Communications equipment






35. Consisting of numerals - letters - and other characters






36. In addition (Oring) and multiplication (ANDing) of three or more variables - the order in which the variables are grouped makes no difference






37. 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






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






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






40. American National Standards Institute






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






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






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






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






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






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






47. 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






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






50. A logic circuit used to add two binary numbers