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






2. A unit of the cross - sectional area of a wire.






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






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






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






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






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






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






9. Having two values or states; describes a number system that has a base of two and utilizes 1 and 0 as its digits






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






11. A type of semiconductor memory that stores data in the form of charge packets and is serially accessed






12. Data Terminal equipment






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






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






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






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






17. A receiving device on a bus






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






19. A type of magnetic tape format






20. The beginning address of a segment of memory






21. 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






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






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






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






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






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






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






29. 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






30. American National Standards Institute






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






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






33. Arithmetic Logic Unit; the key processing element of a microprocessor that perfoms arithmetic and logic operations.






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






35. 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






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






37. Having two opposites charge carriers within the transistor structure






38. A logic circuit used to add two binary numbers






39. 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






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






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






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






43. The unit of electrical current






44. Altera HDL; a nonstandard HDL






45. Direct memory access; a method to directly interface a peripheral device to memory without using the CPU for control






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






47. A program that translates an assembly language program for one type of microprocessor to an assembly language for another type of microprocessor






48. A circuit (digital service) that switches digital data from one input line to several output lines in a specified time sequence






49. Consisting of numerals - letters - and other characters






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