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






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






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






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






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






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






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






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






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






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






11. 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






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






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






14. 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






15. A complex programmable logic device that consists basically of muliple SPLD arrays with programmable interconnections.






16. An expression of variables and operators used to express the operation of a logic circuit






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






18. The number of protons in a nucleus






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






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






21. 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






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






23. 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.






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






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






26. 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.






27. The process of converting an analog signal to digital form






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






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






30. A receiving device on a bus






31. A programming language that uses English like words and has a one- to- one correspondence to machine language






32. Transistor-Transistor Logic and is implemented with bipolar junction transistors






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






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






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






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






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






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






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






40. The unit of electrical current






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






42. The beginning address of a segment of memory






43. A bridge circuit that is in the balanced state as indicated by 0 V across the output.






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






45. 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.






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






47. 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.






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






49. 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






50. A basic logic operation in which a true(high) output occurs only when all the input conditions are true (high)







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