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






2. 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






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






4. A relatively small - high- speed memory that stores the most recently used instructions or data from the larger but slower main memory






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






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






7. Arithmetic Logic Unit; the key processing element of a microprocessor that perfoms arithmetic and logic operations.






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






9. 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






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






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






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






13. 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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14. Transistor-Transistor Logic and is implemented with bipolar junction transistors






15. A combined coder and decoder






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






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






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






19. Burst extended data output dynamic random- access memory






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






21. The maximum value of a voltage or current






22. 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






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






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






25. A electrical property of matter that exist because of an excess or a deficiency of electrons. Can be either positive or negative






26. The unit of electrical current






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






28. 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






29. In Boolean algebra - the AND operation






30. A group of eight bits






31. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






33. 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.






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






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






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






38. A unit of the cross - sectional area of a wire.






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






40. A type of magnetic tape format






41. An electrical instrument used to measure current






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






43. A method for internally testing a PLD based on the JTAG standard (IEEE std.)






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






45. The actual current in a branch






46. A receiving device on a bus






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






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

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49. Describes a number system with a base of ten






50. An application program in development software packages that controls the design flow process and translates source code into object code in a format that can be logically tested or downloaded to a target device