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






2. A receiving device on a bus






3. A basic logic operation in which a true(high) output occurs only when all the input conditions are true (high)






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






5. A reduction of the output signal compared to the input signal - resulting in a ratio with a value of less than 1 for the output voltage to the input voltage of a circuit.






6. Digital audio tape; a type of magnetic tape format






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






8. 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






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






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






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






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






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






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






15. 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






16. 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






17. A digital counter having ten states






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






19. The beginning address of a segment of memory






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






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






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






23. The mathematics of logic circuits






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






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






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






27. A group of eight bits






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






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






30. In Boolean algebra - the OR operation






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






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






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






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






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






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






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






39. Consisting of numerals - letters - and other characters






40. Sum of all the voltage drops in series equals to the source voltage

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






42. 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.

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






44. Burst extended data output dynamic random- access memory






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






46. A method for the automated testing of printed circuit boards in which the board is mounted on a fixture that resembles a bed of nails that makes contact with test points






47. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit






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






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






50. 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.