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. A device used to convert an analog signal to a sequence of digital codes






2. Characterized by ten states or values






3. American Standard Code for Information Interchange; the most widely used alphanumeric code.






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






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






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






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






8. One of the three regions in a bipolar Junction transistor(North junction of NpN)






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






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






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






12. The time from the application of a valid memory address to the appearance of valid output data






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






14. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






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






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






18. Sum of all currents entering a node is equal to the sum of all currents leaving the same node


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






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






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






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






23. Describes a number system with a base of ten






24. 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






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






26. A logic circuit used to add two binary numbers






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






28. The actual current in a branch






29. An application program in development software packages that controls the design flow process and translates source code into object code in a format that can be logically tested or downloaded to a target device






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






31. Sum of all the voltage drops in series equals to the source voltage


32. Consisting of numerals - letters - and other characters






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






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






35. In Boolean algebra - the OR operation






36. Having two opposites charge carriers within the transistor structure






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






38. 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






39. A type of magnetic tape format






40. 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






41. 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






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






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






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






45. A reduction of the output signal compared to the input signal - resulting in a ratio with a value of less than 1 for the output voltage to the input voltage of a circuit.






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






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






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






49. The basic timing signal in a digital system; a periodic waveform in which the interval between pulses equals the time for one bit; the triggering input of a flip- flop






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