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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 ratio of pulse width to period expressed as a percentage






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






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

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4. 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.






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






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






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






8. An electrical instrument used to measure current






9. In Boolean algebra - the OR operation






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






11. Data Communications equipment






12. 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






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






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






15. A circuit with a complete current path






16. A type of IC package whose leads must pass through holes to the other side of a PC board






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






18. The actual current in a branch






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






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






21. 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






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






23. The inverse of opposite of a number - in Boolean algebra - the inverse function - expressed with a bar over the variable. The complement of a 1 is a 0 - and vice versa






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






25. 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






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






27. Consisting of numerals - letters - and other characters






28. The maximum value of a voltage or current






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






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






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






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






33. 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.






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






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






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






37. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






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






40. 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






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






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






43. Burst extended data output dynamic random- access memory






44. Characterized by ten states or values






45. A unit of logic in an FPGA that is made up of multiple smaller logic modules and a local programmable interconnect that is used to connect logic modules within the CLB






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






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






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






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






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