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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 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.






2. The maximum value of a voltage or current






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






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






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






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






7. A notational system for logic symbols that specifies input and output relationships thus fully defining a given function






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






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






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






11. 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






12. 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






13. A type of counter in which each stage is clocked from the output of the preceding stage.






14. The beginning address of a segment of memory






15. American National Standards Institute






16. Having two opposites charge carriers within the transistor structure






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






18. A group of eight bits






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






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






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






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






23. The mathematics of logic circuits






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






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






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






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






29. The unit of electrical current






30. A document that specifies parameter values and operating conditions for an integrated circuits or other device






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






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






33. Stands for Complementary Metal-Oxide Semiconductor and is implemented with a type of field transistor






34. A receiving device on a bus






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






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






37. A program that converts English- like mnemonics into machine code






38. A logic gate that produces a High output only when all of the inputs are HIGH






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






40. 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






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






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






43. 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.






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. The application of a dc voltage to an electronic device to produce a desired mode of operation






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






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






48. One of the three regions in a bipolar junction transistor






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






50. The number of protons in a nucleus