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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. A logic circuit used to add two binary numbers






2. The beginning address of a segment of memory






3. 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






4. 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.






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






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






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






8. In Boolean algebra - the OR operation






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






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






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






12. 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






13. The effect created when a signal is sampled at less than twice the signal frequency. Aliasing creates unwanted frequencies that interfere with the signal frequency.






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






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






16. The main part of a computer responsible for control and processing of data; the core of a DSP that processes the program instructions






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






18. A complex programmable logic device that consists basically of muliple SPLD arrays with programmable interconnections.






19. A type of magnetic tape format






20. Having two opposites charge carriers within the transistor structure






21. 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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22. American wire gauge; a standardization based on wire diameter






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






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






25. 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






26. The number of protons in a nucleus






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






28. Consisting of numerals - letters - and other characters






29. A set of conductive paths hat connects the CPU to other parts of the computer to coordinate its operations and to communicate with external devices






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






31. 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






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






33. One current path in a parallel circuit; a current path that connects two nodes






34. A combination of logic gates interconnected to produce a specified Boolean function with no storage or memory capability; sometimes called combinatorial logic






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






36. 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.






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






38. In Boolean algebra - the AND operation






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






40. 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






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






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






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. 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






45. An arrangement of electrical and/or electronic components interconnected in such a way as to perform a specified function






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






47. A circuit with a complete current path






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






49. 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






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







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