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Introduction to the C Programming Language for Embedded Applications

Introduction to the C Programming Language for Embedded Applications

This article discusses the basic characteristics of C, a straightforward language that is still widely used for programming microcontrollers.


Western Digital SweRVs Towards Open Source with New RISC-V Core, ISS, and Cache Coherency

Western Digital SweRVs Towards Open Source with New RISC-V Core, ISS, and Cache Coherency

Is open source changing the way we manage data? Western Digital, a data storage device company, switched to RISC-V's open-source ISA (instruction set architecture) a year ago. This month, they announced a series of open-source, collaborative initiatives that aim to make data more open, from processor cores to memory caches.


News Dec 18, 2018 by Kate Smith
Clock Signals in FPGA Design: Data Path Maximal Clock Rates and the Xilinx PERIOD Timing Constraint

Clock Signals in FPGA Design: Data Path Maximal Clock Rates and the Xilinx PERIOD Timing Constraint

This article will discuss the Xilinx Period timing constraint that allows us to describe the characteristics of the clock signal that will be used with an FPGA design.


Ladder Logic in Programmable Logic Controllers (PLCs)

Ladder Logic in Programmable Logic Controllers (PLCs)

This article describes the programming language ladder logic used to program PLCs and shows examples of how it functions.


Schematic Symbols for Electronic Components: Transistors

Schematic Symbols for Electronic Components: Transistors

This two-article series presents an overview of circuit symbols and also provides some information on the components themselves.


News Brief: ON Semiconductor’s Newest CCD Image Sensor for AOI Applications

News Brief: ON Semiconductor’s Newest CCD Image Sensor for AOI Applications

ON Semiconductor has announced their latest CCD image sensor, the KAI-50140, that incorporates 50 megapixels with industrial inspection in mind.


News Oct 30, 2018 by Robin Mitchell
Intro Software Walkthrough: Fast Fourier Transforms and the Xilinx FFT IP Core

Intro Software Walkthrough: Fast Fourier Transforms and the Xilinx FFT IP Core

This article will explain some of the most important settings and design parameters for the Xilinx FFT IP core and function as a basic walkthrough of the Fast Fourier Transform interface.


How to Use Your Computer to Generate Complex Analog Waveforms

How to Use Your Computer to Generate Complex Analog Waveforms

This article presents Scilab code that allows you to generate I/Q, noise, and chirp signals from your PC’s headphone jack.


How to Use Your Computer as an Arbitrary Waveform Generator

How to Use Your Computer as an Arbitrary Waveform Generator

In this article, we’ll use Scilab to generate numerical signals that can be converted into analog waveforms by a computer’s audio hardware.


Introduction to Clock Domain Crossing: Double Flopping

Introduction to Clock Domain Crossing: Double Flopping

This article will discuss a well-known technique called “double flopping” to transfer a single-bit control signal between two clock domains.


How to Use I/Q Signals to Design a Robust FSK Decoder

How to Use I/Q Signals to Design a Robust FSK Decoder

An improved algorithm, in conjunction with quadrature modulation, can achieve FSK decoding that is not affected by phase misalignment.


Digital Signal Processing in Scilab: How to Decode an FSK Signal

Digital Signal Processing in Scilab: How to Decode an FSK Signal

Learn about a DSP technique that extracts the original digital data from a demodulated frequency-shift-keying baseband signal.


Clock Signal Management: Clock Resources of FPGAs

Clock Signal Management: Clock Resources of FPGAs

This article will review the common FPGA resources that allow us to efficiently generate and distribute clock signals throughout a system.


Audio Processing in Scilab: How to Implement Spectrum Subtraction

Audio Processing in Scilab: How to Implement Spectrum Subtraction

This article discusses a technique in which frequency-domain subtraction is used to selectively suppress the noise components in an audio signal.


Digital Signal Processing in Scilab: How to Remove Noise in Recordings with Audio Processing Filters

Digital Signal Processing in Scilab: How to Remove Noise in Recordings with Audio Processing Filters

This article is an introduction to the complex topic of DSP-based reduction of noise in audio signals.


How to Perform Frequency Modulation with a Digitized Audio Signal

How to Perform Frequency Modulation with a Digitized Audio Signal

In this article, we’ll use Scilab to create an FM waveform that carries information corresponding to an audio recording.


History of the ISA: Processors, the PowerPC, and the AIM Triple-Threat

History of the ISA: Processors, the PowerPC, and the AIM Triple-Threat

Continuing our series on the Instruction Set Architecture (ISA), this week we delve into the PowerPC ISA.


News Aug 18, 2018 by Chantelle Dubois
Understanding Color Models Used in Digital Image Processing

Understanding Color Models Used in Digital Image Processing

Learn about digital-signal-processing concepts that help us to store and manipulate color information.


Piezoelectric Speakers and Ultrasonic Sensors Abound: A MEMS-Based Audio Roundup

Piezoelectric Speakers and Ultrasonic Sensors Abound: A MEMS-Based Audio Roundup

Sound can be used to detect objects and communicate. This roundup looks at three new MEMS-based microphones and ultrasonic sensors on display at Sensor Expo 2018.


News Aug 16, 2018 by Mark Hughes
What Is an FPGA? An Introduction to Programmable Logic

What Is an FPGA? An Introduction to Programmable Logic

Learn about a hardware-based approach to performing calculations, routing digital signals, and controlling embedded systems using programmable logic and FPGAs.