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 circuit that prevents loading of an input or output






2. A resettable protective device used for interrupting execessive current in an electric circuit






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






4. 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






5. Characterized by ten states or values






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






7. Dual in - line memory module






8. 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.






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






10. A digital circuit device that converts coded information into another (familiar) or noncoded form






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






12. The range of frequencies for which the current (or output voltage) is equal to or greater than 70.7% of its value at the resonant frequency that is considered to be passed by a filter.






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






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






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






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






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






18. Having two opposites charge carriers within the transistor structure






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






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






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






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






23. 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.






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






25. 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






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






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






28. 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






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






30. Data Communications equipment






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






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






33. Burst extended data output dynamic random- access memory






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






35. A notational system for logic symbols that specifies input and output relationships thus fully defining a given function






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






37. In Boolean algebra - the AND operation






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






39. In a division operation the quantity that is being divided






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






41. Consisting of numerals - letters - and other characters






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






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






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






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






46. The process or sequence of operations carried out to program a target device






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






48. Altera HDL; a nonstandard HDL






49. An electrical instrument used to measure current






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