# Abstract machine

An abstract machine is a computer science theoretical model that allows for a detailed and precise analysis of how a computer system functions. It is analogous to a mathematical function in that it receives inputs and produces outputs based on predefined rules. Abstract machines vary from literal machines in that they are expected to perform correctly and independently of hardware. Abstract machines are “machines” because they allow step-by-step execution of programmes; they are “abstract” because they ignore many aspects of actual (hardware) machines. A typical abstract machine consists of a definition in terms of input, output, and the set of allowable operations used to turn the former into the latter. They can be used for purely theoretical reasons as well as models for real-world computer systems. In the theory of computation, abstract machines are often used in thought experiments regarding computability or to analyse the complexity of algorithms. This use of abstract machines is connected to the field of computational complexity theory, such as finite state machines , Mealy machines, push-down automata, and Turing machines. (Wikipedia).

Simple Machines (1 of 7) Pulleys; Defining Forces, Distances and MA

For the pulley simple machine this video defines the terms input and output force, input and output distance and mechanical advantage. A simple machine is a mechanical device that changes the direction and the magnitude of a force. In general, they can be defined as the simplest mechanis

From playlist Mechanics

Associative Binary Operations and Examples Video

Please Subscribe here, thank you!!! https://goo.gl/JQ8Nys Associative Binary Operations and Examples Video. This is video 2 on Binary Operations.

From playlist Abstract Algebra

16 You have made it to the first exciting video Operations

To be honest, the topics have been very dry up to now. Here is the first bit of excitement. Operations. Understanding operations is a fundamental priority in abstract algebra.

From playlist Abstract algebra

Machine Learning

If you are interested in learning more about this topic, please visit http://www.gcflearnfree.org/ to view the entire tutorial on our website. It includes instructional text, informational graphics, examples, and even interactives for you to practice and apply what you've learned.

From playlist Machine Learning

Simple Machines (4 of 7) Pulleys; Calculating the Amount of Work Done

For the pulley simple machine shows how to calculate the amount of work done when raising an object and why simple machines do not make your work easier! A simple machine is a mechanical device that changes the direction and the magnitude of a force. In general, they can be defined as th

From playlist Mechanics

10 Relations (still with the not-so-exciting-stuff)

This video introduces relations between pairs of elements.

From playlist Abstract algebra

Simple Machines (2 of 7) Pulleys; Calculating Distances, Forces, MA, Part 1

For the pulley simple machine shows how to calculate the input and output distances, the input and output forces and mechanical advantage. A simple machine is a mechanical device that changes the direction and the magnitude of a force. In general, they can be defined as the simplest mech

From playlist Mechanics

Simple Machines (3 of 7) Pulleys; Calculating Forces, Distances, MA, Part 2

For the pulley simple machine shows how to calculate the input force, input distance and the mechanical advantage. A simple machine is a mechanical device that changes the direction and the magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechani

From playlist Mechanics

Equivalence Relations Definition and Examples

Please Subscribe here, thank you!!! https://goo.gl/JQ8Nys Equivalence Relations Definition and Examples. This video starts by defining a relation, reflexive relation, symmetric relation, transitive relation, and then an equivalence relation. Several examples are given.

From playlist Abstract Algebra

Java and Python Online Course | Learn Java and Python | Java and Python Full Course | Simplilearn

From playlist Simplilearn Live

Java Tutorial - 4 | Edureka

Take instructor-led Live class on Java Tutorial at : http://www.edureka.co/java-course The following topics were covered in this Java Tutorial: Abstract Class and Abstract methods, Creating Interface, Implementing Interface, Enums and their Usage, Example Questions. Abstract Class: Abs

From playlist Java Online Training Videos

Compilation - Part One: Overview of the Stages of Compilation

This is part one of a series of videos about compilation. As you will see when you watch this series, compilation involves a diverse range of themes in the field of computer science including high and low level programming paradigms, the definition of context free grammars, the application

From playlist Compilation

Functions, operators, and linearity: the language of abstract math (#SoME1)

Mathematicians and physicists often use abstract notation and terminology to reason about and describe problems at a level above the explicit details of the problem, but often take for granted that everyone already understands what they're doing and why. This video gives a short explanati

From playlist Summer of Math Exposition Youtube Videos

GTAC 2014: A Test Automation Language for Behavioral Models

Nan Li, Medidata Solutions Model-based testers design abstract tests in terms of models such as paths in graphs. Then the abstract tests need to be converted to concrete tests, which are defined in terms of implementation. The transformation from abstract tests to concrete tests have to b

From playlist GTAC 2014

The Power of Abstraction

(April 20, 2009) Barbara Liskov

From playlist Engineering

Milner Award Lecture 2015: Reactive, real-time and hybrid computer systems

Listen to a world expert on computer science speak about advances in reactive, real-time, and hybrid computer systems. Milner Award Lecture 2015 delivered by Professor Thomas Henzinger, Institute of Science and Technology, at the Royal Society, London, on 18 November 2015. https://royal

From playlist Latest talks and lectures

Partial evaluation is a powerful tool for timeshifting some aspects of a program's execution from the future into the present. Among other things, it gives us an automatic way to turn a general, abstract program into a faster, more specialized one. This math-free talk uses Ruby to explain

From playlist RubyConf 2013

[Discrete Mathematics] Finite State Machines

We do a quick introduction to finite state machines, creating our own, understanding what they do, and abstracting the purpose of these machines. Visit our website: http://bit.ly/1zBPlvm Subscribe on YouTube: http://bit.ly/1vWiRxW *--Playlists--* Discrete Mathematics 1: https://www.youtu

From playlist Discrete Math 1

Modern C++ in Embedded Systems

For nearly 35 years I have been working with small processors and there has always been deep divides between practitioners of languages. When writing assembly we ridiculed those using C and when I spent years microcoding we scoffed at everyone. However, nearly all groups continue to wag th

From playlist C++

A Question Of Balance Wooden Toy 3D Model

Modeled and rendered with Solidworks.

From playlist Marble Machines