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Test your basic knowledge |
Digital Fundamentals
Start Test
Study First
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 selects data from several inputs one at a time in a sequence and places them on the output; also called a multiplexer.
Circuit
TTL
Data Selector
Cross - assembler
2. 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
Clock
Atomic number
Bit time
Thevenin Equivalent Circuit
3. The action of a circuit in which it accepts current into its output from a load
Antifuse
Byte
Current sinking
Decrement
4. An electrical device consisting of two conductive plates separated by an insulating material and possessing the property of capacitance.
Decade Counter
Bus interface unit
Capacitor
Boundary scan
5. A transformer in which the primary and secondary are in a single winding
Associative law
ANSI
Autotransformer
Carry
6. The ability of a capacitor to store electrical charge.
Adder
Central processing unit
Design flow
Capacitance
7. 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.
Central processing unit
Array
Addend
Base
8. Voltage Divider Rule in determining TEC Thevenin Equivalence Circuit
CMOS
Bipolar
Vx=(Vs * Rx) /RT
DCE
9. The maximum value of a voltage or current
Clear
Analog
D Flip-Flop
Amplitude
10. A program that translates an assembly language program for one type of microprocessor to an assembly language for another type of microprocessor
bed- of- nails
BEDO DRAM
Cross - assembler
Demultiplexer
11. A type of semiconductor memory having capacitive storage cells that lose stored data over a period of time and therefore must be refreshed.
DMA
Bus interface unit
Diode
Dynamic Memory
12. Stands for Complementary Metal-Oxide Semiconductor and is implemented with a type of field transistor
CMOS
bed- of- nails
Address Bus
D Flip-Flop
13. A type of inductor used to block or choke off high frequencies
DIMM
Clock
Bipolar
Choke
14. The portion of the CPU that interfaces with the system buses and fetches instructions - reads operands - and writes results.
Clock
Bus interface unit
Base
Branch Current
15. A software compiler language for SPLD programming; a type of hardware description language (HDL)
Central processing unit
Boundary scan
DIMM
ABEL(Advance Boolean Expression Language)
16. A measure of the ability of a reactive circuit to permit current; the reciprocal of impedance. the unit is the siemens
Digital linear tape
Capacitor
Admittance
Adder
17. Arithmetic Logic Unit; the key processing element of a microprocessor that perfoms arithmetic and logic operations.
Atom
Bus interface unit
Branch
ALU
18. American Standard Code for Information Interchange; the most widely used alphanumeric code.
Bit
Boundary scan
ASCII
Aliasing
19. A relatively small - high- speed memory that stores the most recently used instructions or data from the larger but slower main memory
CLB (Configurable Logic Block)
Cache memory
DSP
ALU
20. 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
Decimal
Circuit
Compiler
Adder
21. A type of PLD nonvolatile programmable link that can be left open or can be shorted once as directed by the program
Band- stop filter
Antifuse
Ampere
Bistable
22. A bidirectional set of conductive paths on which data or instruction codes are transferred into a microprocessor or on which the result of an operation is sent out from the microprocessor
Data bus
DRAM
Don't Care...
Band- pass filter
23. Direct memory access; a method to directly interface a peripheral device to memory without using the CPU for control
DMA
Bode Plot
Admittance
Data
24. A class of integrated logic circuits that is implemented with a type of field effect transistor
Code
CMOS Complementary Metal Oxide Semiconductor
Boolean algebra
Control Bus
25. A receiving device on a bus
AHDL
Decode
Acceptor
D Flip-Flop
26. A method of analog- to- digital conversion using a 1- bit quantization process
Delta Modulation
Data Selector
Bus
AND gate
27. One of the three regions in a bipolar junction transistor
Kirchoff's Voltage Law
Buffer
Don't Care...
Base
28. 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
Base
Dependency notation
Choke
Ampere- hour(Ah) rating
29. A logic gate that produces a High output only when all of the inputs are HIGH
AND gate
Choke
Closed circuit
Dividend
30. A electrical property of matter that exist because of an excess or a deficiency of electrons. Can be either positive or negative
TTL
Charge
Apparent power
Adder
31. To decrease the binary state of a counter by one
Charge
Capacity
Decrement
Circuit Breaker
32. Basic input/output system; a set of programs in ROM that interfaces the I/) devices in a computer system
Delta Modulation
Boolean expression
CMOS
BIOS
33. A method for internally testing a PLD based on the JTAG standard (IEEE std.)
Address Bus
Antifuse
Band- pass filter
Boundary scan
34. An array of AND gates consisting of a matrix of programmable interconnection
Controller
Bandwidth
Circular Mil (CM)
AND array
35. Digital Signal Processor; a special type of microprocessor that processes data in real time
Aliasing
Capacity
Analog
DSP
36. An electrical instrument used to measure current
Ammeter
Current sinking
Dependency notation
Astable
37. A circuit that prevents loading of an input or output
Buffer
Bidirectional shift Register
Bit
Binary coded decimal
38. The phasor combination of resistive power (true power) and reactive power. The unit is the volt- amperes (VA).
Decrement
CPLD
Bandwidth
Apparent power
39. A one- way group of conductors from the to a memory - or other external device - on which the address code is sent
Asynchronous counter
ABEL(Advance Boolean Expression Language)
Choke
Address Bus
40. In a division operation the quantity that is being divided
Analog- to- digital (A/D) conversion
Dividend
Alphanumeric
Decade
41. A filter that passes a range of frequencies lying between two critical freqencies and rejects frequencies above and below that range.
Dependency notation
ANSI
Band- pass filter
Central processing unit
42. The interval of time occupied by a single bit in a sequence of bits; the period of the clock
Cascade
Kirchoff's Current Law(KCL)
Boolean multiplication
Bit time
43. A digital circuit device that converts coded information into another (familiar) or noncoded form
Bode Plot
Decoder
Bus arbitration
Amplitude
44. The smallest particle of an element possessing the unique characteristics of that element.
Thevenin Equivalent Circuit
Atom
AWG
Boundary scan
45. An arrangement of electrical and/or electronic components interconnected in such a way as to perform a specified function
Attenuation
Ampere
Circuit Breaker
Circuit
46. A combination of logic gates interconnected to produce a specified Boolean function with no storage or memory capability; sometimes called combinatorial logic
Bleeder Current
Battery
Bidirectional shift Register
Combinational logic
47. The process or sequence of operations carried out to program a target device
Bus contention
Design flow
Bit
Distributive Law
48. 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
Norton's Theorem
Acceptor
Kirchoff's Voltage Law
Clear
49. One of the three regions in a bipolar Junction transistor(North junction of NpN)
D Flip-Flop
Decade Counter
Clock
Collector
50. 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
Adjacency
ASCII
CPLD
Binary coded decimal