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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 stage of the DSP pipeline operation in which instructions are assigned to functional units and are decoded.






2. 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






3. 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.






4. The normal level of a pulse waveform; the voltage level in the absence of a pulse.






5. 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






6. Dual in - line memory module






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






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






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






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






11. A resettable protective device used for interrupting execessive current in an electric circuit






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






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






14. Describes a number system with a base of ten






15. 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






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






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






18. Sum of all currents entering a node is equal to the sum of all currents leaving the same node

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






20. The actual current in a branch






21. The mathematics of logic circuits






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






23. American National Standards Institute






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






25. Altera HDL; a nonstandard HDL






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






27. 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.






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






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






30. A group of eight bits






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






32. In addition (Oring) and multiplication (ANDing) of three or more variables - the order in which the variables are grouped makes no difference






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






34. The unit of electrical current






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






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






37. A combined coder and decoder






38. 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






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






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






41. 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






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






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






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






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






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






47. A circuit with a complete current path






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






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






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