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






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






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






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






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






6. 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






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






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






9. 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.






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






11. The VHDL unit that describes the internal operation of a logic function; the internal functional arrangement of the elements that give a device its particular operating characteristics.






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






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






14. Digital Signal Processor; a special type of microprocessor that processes data in real time






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






16. A type of magnetic tape format






17. American National Standards Institute






18. Having two opposites charge carriers within the transistor structure






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






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






21. 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.






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






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






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






25. Data Terminal equipment






26. Data Communications equipment






27. A receiving device on a bus






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






29. Describes a number system with a base of ten






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






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






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






33. The mathematics of logic circuits






34. 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.

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






36. 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






37. Basic input/output system; a set of programs in ROM that interfaces the I/) devices in a computer system






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






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






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






41. The actual current in a branch






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






43. An electrical instrument used to measure current






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






45. The unit of electrical current






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






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






48. A class of integrated logic circuits that is implemented with a type of field effect transistor






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






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