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






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






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






4. An electrical instrument used to measure current






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






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






7. Sum of all currents entering a node is equal to the sum of all currents leaving the same node

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






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






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






11. 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






12. In Boolean algebra - the OR operation






13. Burst extended data output dynamic random- access memory






14. Having two opposites charge carriers within the transistor structure






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






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






18. 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.






19. 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






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






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






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






23. A type of magnetic tape format






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






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






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






27. 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






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






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






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






31. A two terminal circuit containing voltage sources - current sources - and resistors can be modeled as a voltage source in series with a resistor






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






33. American National Standards Institute






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






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






36. A circuit (digital service) that switches digital data from one input line to several output lines in a specified time sequence






37. Characterized by ten states or values






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






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






40. 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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41. Information in numeric - alphabetic - or other form.






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






43. 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






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






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






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






47. A digital circuit that compares the magnitudes of two quantiities and produces an output indicating the relationship of the quantities






48. A reduction of the output signal compared to the input signal - resulting in a ratio with a value of less than 1 for the output voltage to the input voltage of a circuit.






49. The main part of a computer responsible for control and processing of data; the core of a DSP that processes the program instructions






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