Test your basic knowledge |

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






2. 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






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






4. An electrical device consisting of two conductive plates separated by an insulating material and possessing the property of capacitance.






5. A transformer in which the primary and secondary are in a single winding






6. The ability of a capacitor to store electrical charge.






7. 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.






8. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






9. The maximum value of a voltage or current






10. A program that translates an assembly language program for one type of microprocessor to an assembly language for another type of microprocessor






11. A type of semiconductor memory having capacitive storage cells that lose stored data over a period of time and therefore must be refreshed.






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






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






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






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






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






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






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






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






20. 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






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






22. 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






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






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






25. A receiving device on a bus






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






27. One of the three regions in a bipolar junction transistor






28. 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






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






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






31. To decrease the binary state of a counter by one






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






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






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






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






36. An electrical instrument used to measure current






37. A circuit that prevents loading of an input or output






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






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






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






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






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






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






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






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






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






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






48. An asynchronous input used to reset a flip- flop (make the Q output 0); to place a register or counter in the state in which it contains all 0's






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






50. 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