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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 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






2. 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






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






4. In relation to VHDL feature that permits operations to be processed in a parallel;that is operations that occur simultaneously






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






6. One current path in a parallel circuit; a current path that connects two nodes






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






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






9. A type of magnetic tape format






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






11. Burst extended data output dynamic random- access memory






12. The location of a given storage cell or group of cells in a memory; a unique memory location containing on byte






13. The process of converting an analog signal to digital form






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






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






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






17. A digital counter having ten states






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






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






20. 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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21. The normal level of a pulse waveform; the voltage level in the absence of a pulse.






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






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






24. The effect created when a signal is sampled at less than twice the signal frequency. Aliasing creates unwanted frequencies that interfere with the signal frequency.






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






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






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






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






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






30. Data Communications equipment






31. 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






32. A combined coder and decoder






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






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






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






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






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






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






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






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






41. A receiving device on a bus






42. 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






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






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






45. 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






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






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






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






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






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