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






2. 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






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






4. 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.






5. 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






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






7. A combination of input literals that cannot occur and can be used as a 1 or 0 on a Karnaugh Map for simplification

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8. 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.






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






10. A condition where all the load currents are equal and the neutral current is zero






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






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






13. A group of eight bits






14. American National Standards Institute






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






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






17. An energy source that uses a chemical reaction to convert chemical energy into electrical energy.






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






19. Transistor-Transistor Logic and is implemented with bipolar junction transistors






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






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






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






23. In relation to VHDL feature that permits operations to be processed in a parallel;that is operations that occur simultaneously






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






25. 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






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






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






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






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






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






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






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






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






34. 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.






35. 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






36. 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.






37. Altera HDL; a nonstandard HDL






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






39. A bridge circuit that is in the balanced state as indicated by 0 V across the output.






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

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






42. The VHDL unit that describes the internal operation of a logic function; the internal functional arrangement of the elements that give a device its particular operating characteristics.






43. Characterized by ten states or values






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






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






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






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






49. The maximum value of a voltage or current






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