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






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






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






4. American National Standards Institute






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






6. 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.






7. The graph of a filter's frequency response showing the change in the output voltage to input voltage ratio expressed in dB as a function of frequency for a constant input voltage






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






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






10. The inverse of opposite of a number - in Boolean algebra - the inverse function - expressed with a bar over the variable. The complement of a 1 is a 0 - and vice versa






11. 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






12. 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.






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






14. Altera HDL; a nonstandard HDL






15. An asynchronous input used to reset a flip- flop (make the Q output 0); to place a register or counter in the state in which it contains all 0's






16. 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






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






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






19. A receiving device on a bus






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






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






22. The law that states ORing several variables and then ANDing the single variable with each of the several variables and the ORing the product






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






24. 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.






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






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






27. The mathematics of logic circuits






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






29. A type of magnetic tape format






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






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






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






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






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






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






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






38. The beginning address of a segment of memory






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






40. The average of a sine wave over one half- cycle. It is 0.637 times the peak value.






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






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






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






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






45. A group of eight bits






46. Data Terminal equipment






47. Characterized by ten states or values






48. 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






49. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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







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