Test your basic knowledge |

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






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






3. A notational system for logic symbols that specifies input and output relationships thus fully defining a given function






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






5. A theorem that states that any amount of voltage sources and current sources can be combined into a single current source with a parallel resistor.






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






7. 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






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






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






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






11. One of the three regions in a bipolar junction transistor






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






13. Burst extended data output dynamic random- access memory






14. 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






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






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






17. Characterized by ten states or values






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






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






20. The actual current in a branch






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






22. In Boolean algebra - the OR operation






23. 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.






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






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






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






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






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






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






30. A set of interconnections that interface one or more devices based on a standardized specification






31. A digital counter having ten states






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






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






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






35. The basic timing signal in a digital system; a periodic waveform in which the interval between pulses equals the time for one bit; the triggering input of a flip- flop






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






37. The unit of electrical current






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






39. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






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






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






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






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






45. An electrical instrument used to measure current






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






47. 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






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






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






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