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






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






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






4. A group of eight bits






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






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






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. 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






9. 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






10. 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.






11. Having two opposites charge carriers within the transistor structure






12. 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






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






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






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






16. In a division operation the quantity that is being divided






17. A programming language that uses English like words and has a one- to- one correspondence to machine language






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






19. The number of protons in a nucleus






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






21. The beginning address of a segment of memory






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

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23. American National Standards Institute






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






25. 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






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






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






28. 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.






29. In Boolean algebra - the AND operation






30. The ratio of pulse width to period expressed as a percentage






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






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






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






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






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






36. A method for the automated testing of printed circuit boards in which the board is mounted on a fixture that resembles a bed of nails that makes contact with test points






37. A receiving device on a bus






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






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






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






41. The unit of electrical current






42. A bidirectional set of conductive paths on which data or instruction codes are transferred into a microprocessor or on which the result of an operation is sent out from the microprocessor






43. 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






44. 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






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






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






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






48. Burst extended data output dynamic random- access memory






49. 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






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