Browse Definitions:

logic simulator

A logic simulator is a computer program that allows designers and experimenters to conduct virtual tests of complex digital circuitry before working with any hardware. The user can interact with the program to find a component arrangement that will perform a desired task. Once a suitable design has been found, the logic simulator makes it easy to optimize, debug, and modify the circuitry.

All digital systems comprise multiple logic gates, often in vast numbers. Some large or sophisticated systems also contain smaller, self-contained digital devices such flip flops, multiplexers, oscillators, integrators, differentiators, and counters. Each smaller device plays a unique and vital role in the complete system. Before the advent of logic simulators, engineers had to design digital devices and systems by going through a tedious combination of trial-and-error hardware manipulation and educated guesswork.

Logic simulators vary from vendor to vendor, but all offer intuitive GUIs (graphical user interfaces) including toolbars, drag and drop, color coding, and online help. Some programs also offer animation, signal tracing, and alternative logic-gate interconnection options. On the downside, logic simulators run far more slowly than the actual systems do (in some cases millions of times more slowly). Logic simulators can also place significant demands on computer resources because of the vast number of parallel hardware processes that take place in any nontrivial digital system.


Continue reading about logic simulators:

The University of Michigan Department of Electrical Engineering and Computer Science outlines logic simulation processes.

Read about basic logic simulation methods at

Yashusi Umezawa of Fujitsu Laboratories discusses how logic simulation can help engineers check data integrity.

This was last updated in February 2012

Start the conversation

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.


File Extensions and File Formats

Powered by:


  • risk map (risk heat map)

    A risk map, also known as a risk heat map, is a data visualization tool for communicating specific risks an organization faces.

  • internal audit (IA)

    An internal audit (IA) is an organizational initiative to monitor and analyze its own business operations in order to determine ...

  • pure risk (absolute risk)

    Pure risk, also called absolute risk, is a category of threat that is beyond human control and has only one possible outcome if ...


  • federated identity management (FIM)

    Federated identity management (FIM) is an arrangement that can be made among multiple enterprises to let subscribers use the same...

  • cross-site scripting (XSS)

    Cross-site scripting (XSS) is a type of injection security attack in which an attacker injects data, such as a malicious script, ...

  • firewall

    In computing, a firewall is software or firmware that enforces a set of rules about what data packets will be allowed to enter or...



  • business continuity and disaster recovery (BCDR)

    Business continuity and disaster recovery (BCDR) are closely related practices that describe an organization's preparation for ...

  • business continuity plan (BCP)

    A business continuity plan (BCP) is a document that consists of the critical information an organization needs to continue ...

  • call tree

    A call tree -- sometimes referred to as a phone tree -- is a telecommunications chain for notifying specific individuals of an ...


  • volume manager

    A volume manager is software within an operating system (OS) that controls capacity allocation for storage arrays.

  • external storage device

    An external storage device, also referred to as auxiliary storage and secondary storage, is a device that contains all the ...

  • NetApp SolidFire

    NetApp SolidFire is a business division of NetApp Inc. that specializes in all-flash storage systems.


  • hybrid hard disk drive (HDD)

    A hybrid hard disk drive is an electromechanical spinning hard disk that contains some amount of NAND Flash memory.