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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.
Complement
Data Selector
Addend
Assembler
2. A type of bistable multivibrator in which the output assumes the state of the D input on the triggering edge of a clock pulse.
Balanced Bridge
D Flip-Flop
Battery
BIOS
3. A type of semiconductor memory having capacitive storage cells that lose stored data over a period of time and therefore must be refreshed.
Atomic number
Kirchoff's Voltage Law
Dynamic Memory
Control Bus
4. 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.
Bias
Architecture
Capacitor
Carry propagation
5. The actual current in a branch
Branch Current
CLB (Configurable Logic Block)
Admittance
Access time
6. A condition where all the load currents are equal and the neutral current is zero
DAT
Choke
Acceptor
Balanced Load
7. A group of eight bits
Byte
Decimal
Array
Analog- to- digital converter(ADC)
8. An electrical device consisting of two conductive plates separated by an insulating material and possessing the property of capacitance.
CMOS Complementary Metal Oxide Semiconductor
Capacitor
Base
Controller
9. The portion of the CPU that interfaces with the system buses and fetches instructions - reads operands - and writes results.
Diode
DSP
Clock
Bus interface unit
10. In relation to VHDL feature that permits operations to be processed in a parallel;that is operations that occur simultaneously
Concurrency
DAT
CLB (Configurable Logic Block)
Capacitance
11. 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
Bit
Circuit
Component
Ampere- hour(Ah) rating
12. An expression of variables and operators used to express the operation of a logic circuit
Boolean expression
Decimal
Battery
TTL
13. Arithmetic Logic Unit; the key processing element of a microprocessor that perfoms arithmetic and logic operations.
ALU
Counter
Combinational logic
Charge
14. 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.
Charge
Control Unit
CLB (Configurable Logic Block)
DAT
15. Data Terminal equipment
Bus
DTE
Cascade
ASCII
16. The range of frequencies for which the current (or output voltage) is equal to or greater than 70.7% of its value at the resonant frequency that is considered to be passed by a filter.
Bandwidth
Boundary scan
Capacitance
Binary coded decimal
17. American Standard Code for Information Interchange; the most widely used alphanumeric code.
Branch Current
Dual in - line package
ASCII
bed- of- nails
18. The process of producing an output carry in full- adder when both input bits are 1s.
Closed circuit
Binary coded decimal
Carry generation
Aliasing
19. In a pulse waveform - the height or maximum value of the pulse as measured from its low level.
Amplitude
Bidirectional shift Register
ASCII
CPLD
20. A binary digit - which can be either 1 or 0
Circuit
Data Sheet
Bit
DAT
21. The action of a circuit in which it accepts current into its output from a load
Decoder
Decimal
Array
Current sinking
22. The process or sequence of operations carried out to program a target device
Bit time
Design flow
ASCII
Data bus
23. Consisting of numerals - letters - and other characters
BIOS
DRAM
ABEL(Advance Boolean Expression Language)
Alphanumeric
24. The time from the application of a valid memory address to the appearance of valid output data
Branch Current
Decimal
Branch
Access time
25. The process of converting an analog signal to digital form
Analog- to- digital (A/D) conversion
Angular Velocity
ANSI
Capacitor
26. Digital audio tape; a type of magnetic tape format
DAT
Kirchoff's Voltage Law
Carry generation
Controller
27. Basic input/output system; a set of programs in ROM that interfaces the I/) devices in a computer system
BIOS
Binary coded decimal
Apparent power
Ampere
28. 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.
Dynamic Memory
Aliasing
Adder
Boolean expression
29. A interconnection of electrical components designed to produce a desired result. A basic circuits consists of a source - a load and an interconnecting current path.
Admittance
Circuit
Band- pass filter
Concurrency
30. To decrease the binary state of a counter by one
Commutative Law
Analog- to- digital converter(ADC)
Decrement
Counter
31. Describes a number system with a base of ten
Current sinking
Access time
AND array
Decimal
32. A combined coder and decoder
Code
bed- of- nails
Boundary scan
Demultiplexer
33. A set of interconnections that interface one or more devices based on a standardized specification
Vx=(Vs * Rx) /RT
Bus
Aliasing
Comparator
34. One of the three regions in a bipolar Junction transistor(North junction of NpN)
Cache memory
Code
Closed circuit
Collector
35. The law that states ORing several variables and then ANDing the single variable with each of the several variables and the ORing the product
Bus
Distributive Law
Charge- coupled device
Bias
36. American wire gauge; a standardization based on wire diameter
AWG
Component
DCE
Band- pass filter
37. 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.
Array
Current sinking
Address Bus
Circuit Breaker
38. The interval of time occupied by a single bit in a sequence of bits; the period of the clock
Cross - assembler
Amplitude
Bit
Bit time
39. The process that prevents two sources from using a bus at the same time
Control Bus
Decode
Circuit Breaker
Bus arbitration
40. The smallest particle of an element possessing the unique characteristics of that element.
Astable
Atom
Architecture
Capacitance Reactance
41. The rotational rate of a phasor which is related to the frequency of the sine wave that the phasor represents
Angular Velocity
AHDL
Kirchoff's Voltage Law
Analog- to- digital (A/D) conversion
42. An array of AND gates consisting of a matrix of programmable interconnection
Bandwidth
Boolean algebra
Bit time
AND array
43. A class of integrated logic circuits that is implemented with a type of field effect transistor
CMOS Complementary Metal Oxide Semiconductor
Asynchronous counter
Bus
Bit
44. Direct memory access; a method to directly interface a peripheral device to memory without using the CPU for control
Analog- to- digital (A/D) conversion
Concurrency
CMOS Complementary Metal Oxide Semiconductor
DMA
45. A circuit that prevents loading of an input or output
Boundary scan
Current sinking
Bus
Buffer
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
bed- of- nails
Capacity
Central processing unit
Capacitance
47. A nominally continuous electrical signal that varies in amplitude or frequency in response to changes in sound - light - heat - position - or pressure.
Analog
Acceptor
Cascade
Clock
48. 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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183
49. The digit generated when the sum of two binary digits exceeds 1
DTE
Carry
Bleeder Current
DCE
50. The main part of a computer responsible for control and processing of data; the core of a DSP that processes the program instructions
Central processing unit
Bidirectional shift Register
Assembly language
Amplitude