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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 actual current in a branch






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






3. Burst extended data output dynamic random- access memory






4. 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.






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






6. A circuit with a complete current path






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






8. An array of AND gates consisting of a matrix of programmable interconnection






9. In a PLD - a matrix formed by rows of product- term lines columns of input lines with a programmable cell at each junctions. In VHDL - an array is an ordered set of individual items called elements with a single identifier name.






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






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






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






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






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






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






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






17. A connection at the midpoint of a winding in a transformer






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






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






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






21. 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






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

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23. In Boolean algebra - the AND operation






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






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






26. 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.






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






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






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






30. In a division operation the quantity that is being divided






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






32. A code within DOS that allows various operations on files and includes a primitive assembler; to eliminate a problem in hardware or software.






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






34. The average of a sine wave over one half- cycle. It is 0.637 times the peak value.






35. A nominally continuous electrical signal that varies in amplitude or frequency in response to changes in sound - light - heat - position - or pressure.






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






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






38. A combined coder and decoder






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






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






41. An electrical instrument used to measure current






42. 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






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






44. A bidirectional set of conductive paths on which data or instruction codes are transferred into a microprocessor or on which the result of an operation is sent out from the microprocessor






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






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






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






48. 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






49. American National Standards Institute






50. Having two opposites charge carriers within the transistor structure







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