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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 unit of the cross - sectional area of a wire.






2. 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.






3. Describes a number system with a base of ten






4. 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.






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






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






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






8. 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






9. In Boolean algebra - the OR operation






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. Basic input/output system; a set of programs in ROM that interfaces the I/) devices in a computer system






12. Consisting of numerals - letters - and other characters






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






14. A type of semiconductor memory that stores data in the form of charge packets and is serially accessed






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






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






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






18. Having two opposites charge carriers within the transistor structure






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






20. Digital Signal Processor; a special type of microprocessor that processes data in real time






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






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






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






24. 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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25. A circuit with a complete current path






26. 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






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






28. Characterized by ten states or values






29. Dual in - line memory module






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






31. A type of magnetic tape format






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






33. The opposition of a capacitor to permit current; the reciprocal of capacitive reactance. The unit is the siemens.






34. A set of interconnections that interface one or more devices based on a standardized specification






35. The process that prevents two sources from using a bus at the same time






36. Data Terminal equipment






37. In Boolean algebra - the AND operation






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






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






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






41. 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






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






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






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






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






46. Having no stable state. An astable multivibrator oscillates between two quasi- stable states.






47. 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






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






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






50. Arithmetic Logic Unit; the key processing element of a microprocessor that perfoms arithmetic and logic operations.