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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. 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






3. A group of eight bits






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






5. A type of magnetic tape format






6. A receiving device on a bus






7. A semiconductor device that conducts current in only one direction






8. Burst extended data output dynamic random- access memory






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






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






11. 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.






12. 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






13. A digital code in which each of the decimal digits - 0 through 9 - is represented by a group of four bits






14. An adverse condition that could occur if two or more devices try to communicate at the same time on a bus






15. In addition - the number that is added to another number called the augend






16. The beginning address of a segment of memory






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






18. A circuit that selects data from several inputs one at a time in a sequence and places them on the output; also called a multiplexer.






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






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






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






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






23. The actual current in a branch






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






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






26. Having two opposites charge carriers within the transistor structure






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






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






29. A combined coder and decoder






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






31. A circuit with a complete current path






32. An electrical instrument used to measure current






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






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






35. The unit of electrical current






36. Characterized by ten states or values






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






38. A digital counter having ten states






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






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






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






42. 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






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






44. 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






45. 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.






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






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






48. The number of protons in a nucleus






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






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