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






2. Characterized by ten states or values






3. 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.






4. American National Standards Institute






5. The number of protons in a nucleus






6. 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.






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






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






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






10. The unit of electrical current






11. Data Terminal equipment






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






13. 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






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






15. The ability of a capacitor to store electrical charge.






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






17. Burst extended data output dynamic random- access memory






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






19. 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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20. The digit generated when the sum of two binary digits exceeds 1






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






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






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






24. An electrical instrument used to measure current






25. A code within DOS that allows various operations on files and includes a primitive assembler; to eliminate a problem in hardware or software.






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






27. In addition - the number to which the addend is added






28. 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.






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






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






31. The process of producing an output carry in full- adder when both input bits are 1s.






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






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






34. The actual current in a branch






35. 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






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






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






38. An asynchronous input used to reset a flip- flop (make the Q output 0); to place a register or counter in the state in which it contains all 0's






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






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






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






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






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






44. 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






45. Data Communications equipment






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






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






48. Altera HDL; a nonstandard HDL






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






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