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






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






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






4. A semiconductor device that conducts current in only one direction






5. The mathematics of logic circuits






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






7. A type of semiconductor memory having capacitive storage cells that lose stored data over a period of time and therefore must be refreshed.






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






9. 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.


10. 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






11. A type of IC package whose leads must pass through holes to the other side of a PC board






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






13. 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.






14. A logic circuit used to add two binary numbers






15. 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






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






17. In Boolean algebra - the OR operation






18. A type of magnetic tape format






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






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






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






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






23. Data Communications equipment






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






25. 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






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






27. A digital counter having ten states






28. A circuit with a complete current path






29. The inverse of opposite of a number - in Boolean algebra - the inverse function - expressed with a bar over the variable. The complement of a 1 is a 0 - and vice versa






30. A group of eight bits






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






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






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






34. 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.






35. Altera HDL; a nonstandard HDL






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






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






38. A combined coder and decoder






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






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






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






42. In addition (ORing) and multiplication (ANDing) of two variables the order in which the variables are ORed or ANDed makes no difference






43. 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.






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






45. A connection at the midpoint of a winding in a transformer






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






47. Dual in - line memory module






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






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






50. A program that translates an assembly language program for one type of microprocessor to an assembly language for another type of microprocessor