Test your basic knowledge |

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






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






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






4. 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






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






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






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






8. An energy source that uses a chemical reaction to convert chemical energy into electrical energy.






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






10. 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.






11. 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






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






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






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






15. Data Communications equipment






16. 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






17. The unit of electrical current






18. The beginning address of a segment of memory






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






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






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






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






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






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






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






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






27. Describes a number system with a base of ten






28. 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.






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






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






31. A unit of the cross - sectional area of a wire.






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






33. Data Terminal equipment






34. 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






35. Altera HDL; a nonstandard HDL






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






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






38. A digital circuit capable of counting electronic events - such as pulses - by progressing through a sequence of binary states.






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






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






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






42. A set of interconnections that interface one or more devices based on a standardized specification






43. The maximum value of a voltage or current






44. The mathematics of logic circuits






45. An array of AND gates consisting of a matrix of programmable interconnection






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






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






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






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






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