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. American National Standards Institute






2. A group of eight bits






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






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






5. A set of interconnections that interface one or more devices based on a standardized specification






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






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






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






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. 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






11. The mathematics of logic circuits






12. 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






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






14. 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






15. American Standard Code for Information Interchange; the most widely used alphanumeric code.






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






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






18. 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






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






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






21. A code within DOS that allows various operations on files and includes a primitive assembler; to eliminate a problem in hardware or software.






22. The law that states ORing several variables and then ANDing the single variable with each of the several variables and the ORing the product






23. 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






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






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






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






27. 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






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






29. The beginning address of a segment of memory






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






31. Dual in - line memory module






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






33. An electrical instrument used to measure current






34. In Boolean algebra - the AND operation






35. Having two opposites charge carriers within the transistor structure






36. A method of analog- to- digital conversion using a 1- bit quantization process






37. In a PLD - a matrix formed by rows of product- term lines columns of input lines with a programmable cell at each junctions. In VHDL - an array is an ordered set of individual items called elements with a single identifier name.






38. A filter that passes a range of frequencies lying between two critical freqencies and rejects frequencies above and below that range.






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






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






41. Sum of all the voltage drops in series equals to the source voltage


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






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






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


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






46. A logic circuit used to add two binary numbers






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






48. Burst extended data output dynamic random- access memory






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






50. 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