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






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






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






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






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






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






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






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






9. A group of eight bits






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






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






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






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






14. In addition - the number to which the addend is added






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






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






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






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






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






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






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






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






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






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






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






26. A receiving device on a bus






27. The portion of the CPU that interfaces with the system buses and fetches instructions - reads operands - and writes results.






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






29. 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.






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






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






32. A type of magnetic tape format






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






34. 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






35. Burst extended data output dynamic random- access memory






36. 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






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






38. Describes a number system with a base of ten






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






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






41. Having two opposites charge carriers within the transistor structure






42. The process or sequence of operations carried out to program a target device






43. The digit generated when the sum of two binary digits exceeds 1






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






45. American wire gauge; a standardization based on wire diameter






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






47. 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






48. The maximum value of a voltage or current






49. Characterized by ten states or values






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