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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. 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






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






3. A circuit with a complete current path






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






5. A combined coder and decoder






6. A type of PLD nonvolatile programmable link that can be left open or can be shorted once as directed by the program






7. A transformer in which the primary and secondary are in a single winding






8. A nominally continuous electrical signal that varies in amplitude or frequency in response to changes in sound - light - heat - position - or pressure.






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






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






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






12. Data Communications equipment






13. 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






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






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






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 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






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






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






20. 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.






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






22. The beginning address of a segment of memory






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






24. The action of a circuit in which it accepts current into its output from a load






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






26. 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






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






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






29. 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.






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






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






32. A interconnection of electrical components designed to produce a desired result. A basic circuits consists of a source - a load and an interconnecting current path.






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






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






35. A digital counter having ten states






36. In Boolean algebra - the OR operation






37. An electrical instrument used to measure current






38. 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






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






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






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






42. A basic logic operation in which a true(high) output occurs only when all the input conditions are true (high)






43. A type of magnetic tape format






44. 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






45. A type of bistable multivibrator in which the output assumes the state of the D input on the triggering edge of a clock pulse.






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






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






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






49. Having two stable states. Flip- flops and latches are bistable multivibrators.






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







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