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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. Dual in - line memory module






2. The process that prevents two sources from using a bus at the same time






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






4. A bridge circuit that is in the balanced state as indicated by 0 V across the output.






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






6. A program that converts English- like mnemonics into machine code






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






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






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






11. A resettable protective device used for interrupting execessive current in an electric circuit






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






13. Burst extended data output dynamic random- access memory






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






15. In a pulse waveform - the height or maximum value of the pulse as measured from its low level.






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






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






19. The actual current in a branch






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






21. Consisting of numerals - letters - and other characters






22. A digital counter having ten states






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






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






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






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






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






28. 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






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






30. 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






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






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






33. A type of inductor used to block or choke off high frequencies






34. To connect 'end- to- end' as when several counters are connected from the terminal count output of one counter to the enable input of the next counter






35. A logic circuit used to add two binary numbers






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






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






38. A type of PLD nonvolatile programmable link that can be left open or can be shorted once as directed by the program






39. A class of integrated logic circuits that is implemented with a type of field effect transistor






40. 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






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






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






43. 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






44. In Boolean algebra - the AND operation






45. Sum of all the voltage drops in series equals to the source voltage

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46. A receiving device on a bus






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






48. Characteristic of cells in a Karnaugh map in which there is a single- variable change from one cell to another cell next to it on any of its four sides






49. Transistor-Transistor Logic and is implemented with bipolar junction transistors






50. Data Communications equipment







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