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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 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






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






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






4. 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






5. The ability of a capacitor to store electrical charge.






6. 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






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






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






9. An arrangement of electrical and/or electronic components interconnected in such a way as to perform a specified function






10. The mathematics of logic circuits






11. Describes a number system with a base of ten






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






13. 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






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






15. The unit of electrical current






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






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






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






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






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






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






22. 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






23. Burst extended data output dynamic random- access memory






24. 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






25. 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






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






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






28. A receiving device on a bus






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






30. American National Standards Institute






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






32. A series of bits describing a final design that is sent to the target device during programming






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






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






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






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






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






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






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






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






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






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






44. Altera HDL; a nonstandard HDL






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






46. 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.






47. Consisting of numerals - letters - and other characters






48. A condition where all the load currents are equal and the neutral current is zero






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






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