Browse Definitions :
Definition

pulse

A pulse is a burst of current, voltage, or electromagnetic-field energy. In practical electronic and computer systems, a pulse may last from a fraction of a nanosecond up to several seconds or even minutes. In digital systems, pulses comprise brief bursts of DC (direct current) voltage, with each burst having an abrupt beginning (or rise) and an abrupt ending (or decay).

In digital circuits, pulses can make the voltage either more positive or more negative. Usually, the more positive voltage is called the high state and the more negative voltage is called the low state. The length of time between the rise and the decay of a single pulse is called the pulse duration or pulse width. Multiple pulses often occur in a sequence called a pulse train, where the length of time from the beginning of one pulse to the beginning of the next is called the pulse interval.

Digital pulses usually have well-defined shapes (voltage-vs.-time graphs, as might be observed on an oscilloscope ) such as rectangular or triangular. In nature, however, pulses can have irregular shapes and can occur at random intervals. A good example is an EMP (electromagnetic pulse) generated by a lightning discharge in a thunderstorm, a solar flare, or a transient "voltage spike" that can occasionally occur on a utility power line.

This was last updated in May 2012

Continue Reading About pulse

Networking
  • Network as a Service (NaaS)

    Network as a service, or NaaS, is a business model for delivering enterprise WAN services virtually on a subscription basis.

  • network configuration management (NCM)

    Network configuration management is the process of organizing and maintaining information about all of the components in a ...

  • presentation layer

    The presentation layer resides at Layer 6 of the Open Systems Interconnection (OSI) communications model and ensures that ...

Security
  • backdoor (computing)

    A backdoor attack is a means to access a computer system or encrypted data that bypasses the system's customary security ...

  • Heartbleed

    Heartbleed was a vulnerability in some implementations of OpenSSL, an open source cryptographic library.

  • What is risk management and why is it important?

    Risk management is the process of identifying, assessing and controlling threats to an organization's capital and earnings.

CIO
HRSoftware
  • team collaboration

    Team collaboration is a communication and project management approach that emphasizes teamwork, innovative thinking and equal ...

  • employee self-service (ESS)

    Employee self-service (ESS) is a widely used human resources technology that enables employees to perform many job-related ...

  • learning experience platform (LXP)

    A learning experience platform (LXP) is an AI-driven peer learning experience platform delivered using software as a service (...

Customer Experience
  • headless commerce (headless e-commerce)

    Headless commerce, also called headless e-commerce, is a platform architecture that decouples the front end of an e-commerce ...

  • chief customer officer (CCO)

    A chief customer officer, or customer experience officer, is responsible for customer research, communicating with company ...

  • relationship marketing

    Relationship marketing is a facet of customer relationship management (CRM) that focuses on customer loyalty and long-term ...

Close