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






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






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






4. 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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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.

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






7. A type of counter in which each stage is clocked from the output of the preceding stage.






8. Dual in - line memory module






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






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






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






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






13. A combination of logic gates interconnected to produce a specified Boolean function with no storage or memory capability; sometimes called combinatorial logic






14. In Boolean algebra - the OR operation






15. A set of conductive paths hat connects the CPU to other parts of the computer to coordinate its operations and to communicate with external devices






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






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






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






19. The current left after the total load current is subtracted from the total current into the circuit






20. American National Standards Institute






21. A interconnection of electrical components designed to produce a desired result. A basic circuits consists of a source - a load and an interconnecting current path.






22. A type of inductor used to block or choke off high frequencies






23. 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.






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






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






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






27. One of the three regions in a bipolar Junction transistor(North junction of NpN)






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






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






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






31. A type of PLD nonvolatile programmable link that can be left open or can be shorted once as directed by the program






32. 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






33. Having two opposites charge carriers within the transistor structure






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






35. A circuit that selects data from several inputs one at a time in a sequence and places them on the output; also called a multiplexer.






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






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






38. Altera HDL; a nonstandard HDL






39. The process of producing an output carry in full- adder when both input bits are 1s.






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






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






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






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 law that states ORing several variables and then ANDing the single variable with each of the several variables and the ORing the product






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






46. 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






47. The unit of electrical current






48. In Boolean algebra - the AND operation






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

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50. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit







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