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Digital Fundamentals

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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. 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






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






3. An instrument that can specify each of the other instruments on the bus as either a talker or a listener for the purpose of data transfer.






4. A digital circuit device that converts coded information into another (familiar) or noncoded form






5. A software compiler language for SPLD programming; a type of hardware description language (HDL)






6. A combined coder and decoder






7. 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






8. The number of protons in a nucleus






9. Having two opposites charge carriers within the transistor structure






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






11. The maximum value of a voltage or current






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






13. The range of frequencies for which the current (or output voltage) is equal to or greater than 70.7% of its value at the resonant frequency that is considered to be passed by a filter.






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






15. 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






16. Dynamic random- access memory; a type of semiconductor memory that uses capacitors as the storage elements and is a volatile - read/write memory






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






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






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






20. American National Standards Institute






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






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






23. The opposition of a capacitor to permit current; the reciprocal of capacitive reactance. The unit is the siemens.






24. Characterized by ten states or values






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






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






27. A receiving device on a bus






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






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






30. A circuit with a complete current path






31. Altera HDL; a nonstandard HDL






32. A digital circuit capable of counting electronic events - such as pulses - by progressing through a sequence of binary states.






33. Burst extended data output dynamic random- access memory






34. A VHDL feature that can be used to predefine the logic function for multiple use throughout a program or programs






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






36. 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






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






38. A stage of the DSP pipeline operation in which instructions are assigned to functional units and are decoded.






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






40. 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






41. 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.






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






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






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






45. 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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46. 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






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






48. Having two stable states. Flip- flops and latches are bistable multivibrators.






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






50. A type of magnetic tape format







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