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 maximum value of a voltage or current






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






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






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






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






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






7. A logic circuit used to add two binary numbers






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






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






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






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






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






13. Altera HDL; a nonstandard HDL






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






15. A receiving device on a bus






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






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






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






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






20. The portion of the CPU that interfaces with the system buses and fetches instructions - reads operands - and writes results.






21. A connection at the midpoint of a winding in a transformer






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






23. A type of inductor used to block or choke off high frequencies






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


25. A measure of the ability of a reactive circuit to permit current; the reciprocal of impedance. the unit is the siemens






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






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






28. The actual current in a branch






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






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






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






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






33. In a division operation the quantity that is being divided






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






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






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






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






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






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






41. 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






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






43. 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






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






45. A combined coder and decoder






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






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






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






49. The location of a given storage cell or group of cells in a memory; a unique memory location containing on byte






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