Test your basic knowledge |

Digital Fundamentals

Subject : engineering
Instructions:
  • Answer 50 questions in 20 minutes. 2 minutes extra for reading the instructions.
  • 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 digital counter having ten states






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






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






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






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






6. 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






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






8. The unit of electrical current






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






10. A circuit with a complete current path






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. A circuit that prevents loading of an input or output






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






14. The ratio of pulse width to period expressed as a percentage






15. Having two values or states; describes a number system that has a base of two and utilizes 1 and 0 as its digits






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






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






18. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






19. Altera HDL; a nonstandard HDL






20. 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.






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






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






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






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






25. 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.






26. A method for the automated testing of printed circuit boards in which the board is mounted on a fixture that resembles a bed of nails that makes contact with test points






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






28. The number of protons in a nucleus






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






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






31. 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






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






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






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






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






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






37. 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.






38. 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.


39. 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.






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






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






42. Describes a number system with a base of ten






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






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






45. 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






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






47. Characterized by ten states or values






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






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






50. A semiconductor device that conducts current in only one direction