Download Specifying Systems: The TLA+ Language and Tools for Hardware by Leslie Lamport PDF

By Leslie Lamport

This ebook is the distillation of over 25 years of labor through one of many world's most famous machine scientists. A specification is a written description of what a approach is meant to do, plus a fashion of checking to ensure that it really works. Specifying a approach is helping us know it. it is a strong notion to appreciate a process ahead of development it, so it is a sturdy proposal to write down a specification of a method sooner than imposing it. the best device to explain a specification is the Temporal common sense of activities, or TLA, since it presents a mathematical, i.e. special, starting place for describing structures. TLA+ is the language the writer built to write down the mathematical requirements. TLA+ is accessible freely on the net. it may be used for either software program and undefined. in truth, Intel is utilizing TLA+ with nice luck within the layout of a brand new chip. The ebook is split into 4 elements. the 1st half comprises all that the majority programmers and engineers want to know approximately writing requirements. the second one half comprises extra complicated fabric for extra refined readers. The 3rd and fourth elements include a reference guide for TLA+ - either the language itself in addition to its instruments

Show description

Read or Download Specifying Systems: The TLA+ Language and Tools for Hardware and Software Engineering PDF

Similar systems analysis & design books

Biometric systems: technology, design, and performance evaluation

This e-book offers practitioners with an summary of the rules & tools had to construct trustworthy biometric structures. It covers three major themes: key biometric applied sciences, checking out & administration concerns, & the felony and method concerns of biometric platforms for private verification/identification.

Software Language Engineering: Creating Domain-Specific Languages Using Metamodels

Software program practitioners are speedily gaining knowledge of the enormous worth of Domain-Specific Languages (DSLs) in fixing difficulties inside truly definable challenge domain names. builders are utilising DSLs to enhance productiveness and caliber in quite a lot of parts, comparable to finance, strive against simulation, macro scripting, picture new release, and extra.

Specifying Systems: The TLA+ Language and Tools for Hardware and Software Engineering

This e-book is the distillation of over 25 years of labor via one of many world's most famed computing device scientists. A specification is a written description of what a approach is meant to do, plus a manner of checking to ensure that it really works. Specifying a approach is helping us comprehend it. it is a stable inspiration to appreciate a approach earlier than development it, so it is a reliable inspiration to write down a specification of a approach prior to imposing it.

Bases de Datos

Éste es un excelente texto para el curso de diseño de bases de datos. El libro integra los angeles teoría de los angeles base de datos, de modo práctico, con su diseño y aplicación. El texto está diseñado específicamente para el estudiante moderno de los angeles base de datos, quien requiere conocer los angeles teoría y el diseño, así como las aplicaciones en el campo profesional.

Additional resources for Specifying Systems: The TLA+ Language and Tools for Hardware and Software Engineering

Sample text

Chapter 4 A FIFO Our next example is a FIFO buffer, called a FIFO for short—a device with which a sender process transmits a sequence of values to a receiver. 2 on page 30. The system’s specification will allow behaviors with four kinds of nonstuttering steps: Send and Rcv steps on both the in channel and the out channel. 1 The Inner Specification The specification of the FIFO first extends modules Naturals and Sequences. The Sequences module defines operations on finite sequences. We represent a finite sequence as a tuple, so the sequence of three numbers 3, 2, 1 is the triple 3, 2, 1 .

3 CHAPTER 2. SPECIFYING A SIMPLE CLOCK A Closer Look at the Specification A state is an assignment of values to variables, but what variables? The answer is simple: all variables. 1) on page 16, [hr = 1] represents some particular state that assigns the √ value 1 to hr . It might assign the value 23 to the variable tmp and the value −17 to the variable m pos. We can think of a state as representing a potential state of the entire universe. A state that assigns 1 to hr and a particular point in 3-space to m pos describes a state of the universe in which the√hour clock reads 1 and the moon is in a particular place.

SPECIFYING A SIMPLE CLOCK module HourClock extends Naturals variable hr ∆ HCini = hr ∈ (1 . 12) ∆ HCnxt = hr ′ = if hr = 12 then hr + 1 else 1 ∆ HC = HCini ∧ ✷[HCnxt ]hr theorem HC ⇒ ✷HCini ---------------------- MODULE HourClock ---------------------EXTENDS Naturals VARIABLE hr HCini == hr \in (1 .. 1: The hour-clock specification—typeset and ASCII versions. To define HCini , we need to express the set {1, . . , 12} formally, without the ellipsis “. . ”. We can write this set out completely as {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12} but that’s tiresome.

Download PDF sample

Rated 4.57 of 5 – based on 39 votes