Test your basic knowledge |

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






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






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. American wire gauge; a standardization based on wire diameter






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






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






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






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






9. The beginning address of a segment of memory






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






11. The unit of electrical current






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






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






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






15. The maximum value of a voltage or current






16. 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






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






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






19. The basic timing signal in a digital system; a periodic waveform in which the interval between pulses equals the time for one bit; the triggering input of a flip- flop






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






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






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






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






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






25. The mathematics of logic circuits






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






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






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






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






30. A digital counter having ten states






31. The effect created when a signal is sampled at less than twice the signal frequency. Aliasing creates unwanted frequencies that interfere with the signal frequency.






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






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






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






35. Data Terminal equipment






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






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






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






39. An instrument that can specify each of the other instruments on the bus as either a talker or a listener for the purpose of data transfer.






40. 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






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






42. To decrease the binary state of a counter by one






43. 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






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






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






46. An electrical instrument used to measure current






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. Burst extended data output dynamic random- access memory






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






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