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Digital Fundamentals

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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 measure of the ability of a reactive circuit to permit current; the reciprocal of impedance. the unit is the siemens






2. Data Terminal equipment






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






4. The beginning address of a segment of memory






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






6. 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






7. Having two opposites charge carriers within the transistor structure






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






9. The actual current in a branch






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






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






12. 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






13. In addition - the number that is added to another number called the augend






14. 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






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






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






17. The rotational rate of a phasor which is related to the frequency of the sine wave that the phasor represents






18. A type of magnetic tape format






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






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 program that converts English- like mnemonics into machine code






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






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






24. The maximum value of a voltage or current






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






26. A receiving device on a bus






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






28. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






29. A digital counter having ten states






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






31. A resettable protective device used for interrupting execessive current in an electric circuit






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






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






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






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






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

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






38. A reduction of the output signal compared to the input signal - resulting in a ratio with a value of less than 1 for the output voltage to the input voltage of a circuit.






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






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






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






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






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






44. In Boolean algebra - the OR operation






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






46. American National Standards Institute






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






48. The process that prevents two sources from using a bus at the same time






49. Consisting of numerals - letters - and other characters






50. 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