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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. In Boolean algebra - the OR operation






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






3. 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






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






5. The unit of electrical current






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






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






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






9. Having two opposites charge carriers within the transistor structure






10. 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.






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






12. Altera HDL; a nonstandard HDL






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






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






15. Consisting of numerals - letters - and other characters






16. 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.






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






18. The actual current in a branch






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






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






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






22. 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






23. In relation to VHDL feature that permits operations to be processed in a parallel;that is operations that occur simultaneously






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






25. 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






26. 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






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






28. A digital circuit that compares the magnitudes of two quantiities and produces an output indicating the relationship of the quantities






29. A receiving device on a bus






30. 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






31. 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.






32. 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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33. The process of converting an analog signal to digital form






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






35. 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






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






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






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






39. American National Standards Institute






40. Data Communications equipment






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






42. 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.






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






44. Dual in - line memory module






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






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






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






48. A binary digit - which can be either 1 or 0






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






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