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






2. A combined coder and decoder






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






4. The process of rippling an input carry to become the output carry in a full- adder when either or both of the input bits are 1's and the input carry is a 1






5. The portion of the CPU that interfaces with the system buses and fetches instructions - reads operands - and writes results.






6. 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.






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






8. Digital Signal Processor; a special type of microprocessor that processes data in real time






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






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






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






12. A digital circuit capable of counting electronic events - such as pulses - by progressing through a sequence of binary states.






13. Data Terminal equipment






14. Altera HDL; a nonstandard HDL






15. The beginning address of a segment of memory






16. 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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17. 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






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






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






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






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






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






23. Transistor-Transistor Logic and is implemented with bipolar junction transistors






24. American National Standards Institute






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






26. The actual current in a branch






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






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






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

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






31. The unit of electrical current






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






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






34. 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






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






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






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






38. 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.






39. A class of integrated logic circuits that is implemented with a type of field effect transistor






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






41. A digital circuit device that converts coded information into another (familiar) or noncoded form






42. The smallest particle of an element possessing the unique characteristics of that element.






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






44. A digital counter having ten states






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






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






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






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






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






50. 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







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