Moore machine

In a Moore finite state machine, the output of the circuit is dependent only on the state of the machine and not on its inputs. This is described i pictorially in Figure 3-5. Since the outputs are dependent only on the j state, a good way to describe a Moore machine is to use an always state- j ment with a case statement. The case statement is used to switch between j the various states and the output logic for each state is described in the appropriate branch. The always statement can have the clock event in its] event list to indicate that it is a clocked always statement. This models the] condition of a finite state machine going from state to state synchronously j on every clock edge. The machine state itself is modeled using a reg vari-] able (a variable of reg data type). 

A finite state machine is a quintuple Q,T,6,qo F) with Q being a finite nonempty set of states, S the finite nonempty input alphabet, 6 the transition mapping, qo a start state, and F the set of accepting states. In terms of a logic circuit, we usually let the input symbols correspond to data bits on a number of input lines and the states correspond to the values contained in the registers. In hardware applications, it is customary to introduce two derived machine concepts, known as the Moore and Mealy type machines. A (deterministic) Moore machine is described by a six-tuple (Q, S,<5,/m, r, < ), where Init is a set of initial states, T the output alphabet, and (j> Q — T the output function. In a Mealy machine, outputs are associated with the edges in the state diagram so we have Q x E —F. We will call a machine incompletely specified if the 6 function is not fully defined over its domain of states and symbols. 

The equivalence test in this case is somewhat complicated in fact, we are comparing a Mealy machine implementation (the circuit) against a Moore machine specification. In the circuit, Z is valid after the first three clock ticks and from then on after every fourth tick. In the state machine, Success might be reached after every fourth clock tick. We therefore introduce a simple modulo-four ring counter to serve as a time base ... 

T. Moor, Machine Safety in Factory Automation, IHS, HIS Engineering 360, March 2015. 

A finite state machine (FSM) consists of a current state (P) and a next state (N), iq>uts (I) and outputs (O). State Machines can be classified as Mealy or Moore machines depending on how the outputs are generated. 

A Moore machine is one in which the outputs are a function of only the current state and independent of the inputs (Figure 2.5). In other words, the functionality can be expressed as. 

Systems are modelled using Moore machines. A Moore machine is a 6-tuple (transition relation, and output S O computes the current outputs from the current states. 

In the Rushby model, systems are modelled using Moore machines. From such a machine, the corresponding GWV system model is defined as the following 5-tuple (.SgjSgojO,next,output ), where ... 

Lowell B. Hawkinson, Carl G. Knickerbocker, and Robert L. Moore LISP Machine Inc., Los Angeles, CA 90045... 

Accdg to Sancho (Ref 30, p 254), Moors used machines for hurling stones... 

The Groove machine mentioned above was the inspiration for Moore s FRMBox [Moore, 1977a] [Moore, 1985], It strongly resembles a CPU as shown in figure 5.4. A centralized control unit polls the modules and stores the output from each board in a... 

One of the earliest machines for audio manipulation was GROOVE, an experimental machine built at Bell Laboratories [Mathews and Moore, 1970], GROOVE was composed of a digital computer controlling an analog synthesizer. The emphasis was on the human interaction, not the analysis or synthesis of sound. 

Shipley, K., Hekmat-Nejad, M., Turner, J., Moores, C., Anderson, R., Milligan, R., Sakowicz, R., and Fletterick, R. (2004). Structure of a kinesin microtubule depolymerization machine. EMBOJ. 23, 1422-1432. 

Anderson, B., Moore, A., and Cohn, D. A. "Presented at International Conference on Machine Learning 2000", Stanford University, CA, USA (2000). 

J.E. Moore, Processing applications for roll-type briquetting-compacting machines, Proc. Inst. Briquet. Agglom. Bien. Conf., 9 (1965) 2—16. 

Here is an example of a Moore finite state machine. A reg variable] MooreState is used to model the machine state which can have either of] the four states. The event list indicates that the state transitions occur synchronously on every rising clock edge. 

The first of these mechanisms is a simple infilling of low spots on the surface. There is no doubt that such an infilling takes place, as shown by the work of Johnston and Moore and Bartz and Muller mentioned previously. Further support for this process is provided by the fact that optimum film formation is strongly influenced by the surface texture of the substrate. It is difficult to accept that this geometrical process alone can account for any effective attachment of crystals, since loose molybdenum disulphide powder applied to a machined surface shows little tendency to form an attached film unless some pressure is applied to it. Compression of powder into a low spot would almost certainly be needed to interlock particles with each other and with the slopes of the cavity, and this interlocking could be expected to be retained when the applied pressure is removed. 

The past twenty years have witnessed a relentless increase in the power of computing machines. It has been observed that the processing power of computers seems to double every eighteen months. This has been dubbed Moore s Law . As J. M. Roberts points out... 

DF Moore. Viscoelastic Machine Elements. Oxford Butterworths-Heinemann,... 

Micro-reaction chambers for the thermal cycling of DNA amphfication by the polymerase chain reaction (PCR) in silicon by bulk machining using anisotropic wet etching have been fabricated by Moore and co-workers [40]. The rapid temperature cycling and the small size of the chambers may be combined with an appropriate transducer in a miniaturized analytical system. 

Turing Machine (TM) is driven by a program which is interpreted by its Control Unit (CUTM). The Control Unit CUTM is a finite automaton (Mealy s or Moore s sequential machine). The program for the TM consists of the finite sequence rj of instructions jj j... 

JA Suykens, TV Gestel, J de Brabanter, B De Moor, and J Van-derwalle. Least Squares Support Vector Machines. World Scientific Publishing Co., Singapore, 2002. 

T Van Gestel, J Suykens, G Lanckriet, A Lambrechts, B De Moor, and J Vandewalle. Bayesian framework for least squares support vector machine classifiers, Gaussian processes, and kernel Fisher discriminant analysis. Neural Computation, 15 1115-1148, 2002. 

Suykens, J.A.K., Van Gestel, T., De Brabanter, J, De Moor, B., and Vandewalle, J. (2002) Least Squares Support Vector Machines, World Scientific, Singapore. 

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