What is the main function of a digital filter in signal processing?
A Store data
B Remove noise
C Amplify signals
D Convert digital to analog
A digital filter is used to process signals by removing unwanted noise or unwanted frequency components. It can help improve the quality of signals before they are further processed or transmitted.
Which hardware description language is used to model digital systems?
A Python
B Java
C C
D VHDL
VHDL (VHSIC Hardware Description Language) is used to describe the behavior and structure of digital circuits. It is a powerful language for designing and simulating complex digital systems and FPGA–based designs.
What is the primary use of an FPGA in digital electronics?
A Store data
B Convert signals
C Implement custom logic circuits
D Perform calculations
FPGA (Field–Programmable Gate Array) is used to implement custom logic circuits. It allows engineers to configure the logic gates and components to suit specific applications, making it ideal for prototyping and specialized digital systems.
Which of these is true about Verilog in digital electronics?
A It operates only on analog signals
B It is a hardware description language
C It is used for software programming
D It is used for electrical calculations
Verilog is a hardware description language used to model, simulate, and design digital systems, particularly for FPGA and ASIC (Application–Specific Integrated Circuit) designs. It describes both the structure and behavior of electronic systems.
What does the acronym FPGA stand for in digital electronics?
A Field Programmable Gate Array
B Flexible Programmable Gate Array
C Field Processed Gate Array
D Fast Programmable Gate Array
FPGA (Field–Programmable Gate Array) is a type of programmable logic device that can be configured by the user to implement a wide range of digital logic circuits. It is commonly used in prototyping and custom hardware designs.
What is the role of a digital–to–analog converter (DAC)?
A Amplifies signals
B Stores data
C Converts digital to analog
D Converts analog to digital
A DAC (Digital–to–Analog Converter) converts a digital signal, typically from a microcontroller or computer, into an analog signal. This is useful in systems that need to interface with analog devices such as speakers or analog displays.
In digital signal processing, what is a typical use of a low–pass filter?
A Amplify low–frequency signals
B Remove high–frequency noise
C Store frequency data
D Convert digital to analog
A low–pass filter allows low–frequency signals to pass through while attenuating higher–frequency noise. It is commonly used in digital signal processing to improve signal quality by filtering out unwanted high–frequency components.
What is the primary function of a clock signal in digital systems?
A Decode signals
B Perform arithmetic operations
C Synchronize timing
D Control the flow of data
The clock signal provides timing synchronization for digital circuits. It ensures that all components, such as flip–flops, registers, and counters, operate in sync and that operations are performed at the correct time intervals.
Which of the following is a characteristic of an FPGA?
A Fixed logic gates
B Limited to simple logic circuits
C Cannot be modified after manufacture
D Can be reprogrammed by the user
An FPGA can be reprogrammed by the user to implement custom logic circuits. This reconfigurability makes FPGAs versatile and ideal for prototyping and applications requiring specific logic functions.
What is a key advantage of using Verilog for hardware design?
A It can model both hardware and software
B It is used for simulation and testing
C It only supports simple circuits
D It is a general–purpose programming language
Verilog is widely used for simulating and testing digital circuits before physical implementation. It allows designers to describe the behavior of complex circuits and test their functionality using simulation tools.
What is the main purpose of a high–pass filter in digital electronics?
A Remove low–frequency noise
B Pass all signals
C Amplify signals
D Convert digital to analog
A high–pass filter allows high–frequency signals to pass while attenuating low–frequency signals. It is useful for removing low–frequency noise or unwanted drift from a signal, especially in communication and audio applications.
Which of the following describes the main purpose of digital filters?
A Increase signal strength
B Amplify digital signals
C Convert analog signals to digital
D Filter out unwanted signals or noise
Digital filters are used to process signals, removing unwanted noise, interference, or frequency components. They can be used to enhance the desired signal quality before further processing or analysis.
Which of the following is true about FPGA programming?
A It is a one–time configuration process
B It cannot be changed once programmed
C It allows for hardware–level programming
D It is only used for software applications
FPGA programming allows users to define hardware–level logic circuits. Unlike software programming, FPGA programming involves creating custom hardware configurations, making it ideal for hardware design and prototyping.
What does the process of “synthesis” refer to in FPGA programming?
A Converting high–level descriptions to gate–level implementations
B Writing Verilog code
C Testing the program
D Designing the physical layout
In FPGA programming, synthesis refers to the process of converting high–level hardware descriptions (such as those written in Verilog or VHDL) into gate–level implementations that can be mapped to the FPGA hardware.
What is the main advantage of using digital filters in communication systems?
A Reduced power consumption
B Improved signal clarity and quality
C Simplified hardware
D Increased signal speed
Digital filters improve the quality of signals by removing unwanted noise and interference. In communication systems, they ensure that the transmitted signal is clear, enhancing the performance of the system and reducing errors.