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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 current left after the total load current is subtracted from the total current into the circuit






2. Burst extended data output dynamic random- access memory






3. The beginning address of a segment of memory






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






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






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






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






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






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






10. The process of rippling an input carry to become the output carry in a full- adder when either or both of the input bits are 1's and the input carry is a 1






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






12. 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.






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






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






15. Having two directions. the stored data can be shifted right or left






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






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






18. The actual current in a branch






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






20. 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






21. The maximum value of a voltage or current






22. The law that states ORing several variables and then ANDing the single variable with each of the several variables and the ORing the product






23. A type of magnetic tape format






24. A group of eight bits






25. Altera HDL; a nonstandard HDL






26. 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.






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






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






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






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






31. A receiving device on a bus






32. American wire gauge; a standardization based on wire diameter






33. The range of frequencies for which the current (or output voltage) is equal to or greater than 70.7% of its value at the resonant frequency that is considered to be passed by a filter.






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






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






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






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






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






39. Describes a number system with a base of ten






40. A program that converts English- like mnemonics into machine code






41. Data Communications equipment






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






43. Data Terminal equipment






44. American National Standards Institute






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






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






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






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






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






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







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