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






2. 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






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






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






5. Having two opposites charge carriers within the transistor structure






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






7. The mathematics of logic circuits






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






9. A bridge circuit that is in the balanced state as indicated by 0 V across the output.






10. A combination of input literals that cannot occur and can be used as a 1 or 0 on a Karnaugh Map for simplification

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11. A logic circuit used to add two binary numbers






12. A complex programmable logic device that consists basically of muliple SPLD arrays with programmable interconnections.






13. 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






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. Dynamic random- access memory; a type of semiconductor memory that uses capacitors as the storage elements and is a volatile - read/write memory






16. Describes a number system with a base of ten






17. 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.






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






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






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






21. In Boolean algebra - the OR operation






22. 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.






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






24. 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






25. 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






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






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






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






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






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






31. A receiving device on a bus






32. 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






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






34. A program that converts English- like mnemonics into machine code






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






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






37. Characterized by ten states or values






38. A circuit that selects data from several inputs one at a time in a sequence and places them on the output; also called a multiplexer.






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






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






41. 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.






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






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






44. 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






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






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






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






48. The unit of electrical current






49. Burst extended data output dynamic random- access memory






50. In Boolean algebra - the AND operation