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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. A semiconductor device that conducts current in only one direction






2. The actual current in a branch






3. A receiving device on a bus






4. In addition - the number to which the addend is added






5. A method for internally testing a PLD based on the JTAG standard (IEEE std.)






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






7. 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.






8. 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.






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






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






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






12. In addition (Oring) and multiplication (ANDing) of three or more variables - the order in which the variables are grouped makes no difference






13. American National Standards Institute






14. A method of analog- to- digital conversion using a 1- bit quantization process






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






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






17. An electrical instrument used to measure current






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






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






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






22. 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






23. The unit of electrical current






24. Characterized by ten states or values






25. Arithmetic Logic Unit; the key processing element of a microprocessor that perfoms arithmetic and logic operations.






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






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






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






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






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






31. 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.






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






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






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






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






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






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






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






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






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






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






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






43. Sum of all the voltage drops in series equals to the source voltage

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44. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






45. The number of protons in a nucleus






46. 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






47. 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.






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






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






50. A type of semiconductor memory that stores data in the form of charge packets and is serially accessed







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