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






2. American National Standards Institute






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






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






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






6. A receiving device on a bus






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






8. A group of eight bits






9. 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.






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






11. A digital circuit device that converts coded information into another (familiar) or noncoded form






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






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






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






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






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






17. A digital counter having ten states






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






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






20. 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






21. 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.






22. A transformer in which the primary and secondary are in a single winding






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






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






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






26. The phasor combination of resistive power (true power) and reactive power. The unit is the volt- amperes (VA).






27. A combined coder and decoder






28. Having two opposites charge carriers within the transistor structure






29. The beginning address of a segment of memory






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






31. Altera HDL; a nonstandard HDL






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






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






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






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






36. The portion within the microprocessor that provides the timing and control signals for getting data into and out of the microprocessor and for synchronizing the execution of instructions.






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






38. 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.






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






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






41. 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






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






43. The actual current in a branch






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






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






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






47. Dual in - line memory module






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






49. 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.






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