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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 combination of input literals that cannot occur and can be used as a 1 or 0 on a Karnaugh Map for simplification

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






3. 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.






4. 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






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






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






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






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






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






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






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






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






13. A type of semiconductor memory that stores data in the form of charge packets and is serially accessed






14. 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






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






16. A receiving device on a bus






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






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






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






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






21. In Boolean algebra - the OR operation






22. The number of protons in a nucleus






23. The mathematics of logic circuits






24. The opposition of a capacitor to permit current; the reciprocal of capacitive reactance. The unit is the siemens.






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






26. A VHDL feature that can be used to predefine the logic function for multiple use throughout a program or programs






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






28. A digital counter having ten states






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






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






31. In addition - the number to which the addend is added






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






33. In Boolean algebra - the AND operation






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






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






36. 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






37. A digital code in which each of the decimal digits - 0 through 9 - is represented by a group of four bits






38. The actual current in a branch






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






40. A combined coder and decoder






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






42. The total number of data units(bits - nibbles - bytes - words) that a memory can store.






43. A semiconductor device that conducts current in only one direction






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






45. An adverse condition that could occur if two or more devices try to communicate at the same time on a bus






46. Consisting of numerals - letters - and other characters






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






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






49. A theorem that states that any amount of voltage sources and current sources can be combined into a single current source with a parallel resistor.

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50. Dual in - line memory module