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






3. 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






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






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






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






7. 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.






8. A combination of logic gates interconnected to produce a specified Boolean function with no storage or memory capability; sometimes called combinatorial logic






9. The process that prevents two sources from using a bus at the same time






10. The ratio of pulse width to period expressed as a percentage






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






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






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






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






15. Dual in - line memory module






16. 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.






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






18. Having two opposites charge carriers within the transistor structure






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






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






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






22. 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.






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






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






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






26. A circuit that prevents loading of an input or output






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






28. The mathematics of logic circuits






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






30. A type of magnetic tape format






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






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






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






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






35. In Boolean algebra - the OR operation






36. An electrical instrument used to measure current






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






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






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






40. Consisting of numerals - letters - and other characters






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






42. A digital circuit that compares the magnitudes of two quantiities and produces an output indicating the relationship of the quantities






43. A combined coder and decoder






44. 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






45. 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






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






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






48. Burst extended data output dynamic random- access memory






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






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