SU711577A1 - Approximate computation arrangement - Google Patents

Description

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The proposal relates to the field of digital computing and can be used in the design and development of specialized devices designed for. solutions of partial differential equations and interpolations of functions using splines. ;

The known digital device for solving differential equations in partial derivatives, based on the principle of bit-analog processing of information, consists of different. A binary logic array built on valve circuits, on the output buses of which there are sequences of impulses corresponding to the pair products of the digits of numbers arriving at the inputs of the reverse 20 cy i "atopa, at the output of which a solution of course is developed Difference equation 11. The disadvantages of this device are:

1. A large amount of equipment, 25 associated, for example, with the need to use 2p input adders for n-bit numbers.

2, Difficulties in automating the decision process associated with the development of AOR

Voltages that control the discharge matrix

3. Difficulties in developing mathematical support associated with the problems of obtaining discharge equations that are different from the original finite difference equations.

The closest in technical essence is a device for simulating thermal conductivity protection 2, contains an input unit connected to an adder, a multiplication unit, two serial-parallel registers connected by outputs with a step-switching unit and a multiplication unit connected to an adder whose output is connected to the input one of the registers.

The specified device contains blocks that allow to solve the heat equation

sc ... .kV di dx dx /

3i

by solving the corresponding system of finite difference equations of the form

Claims (2)

1.Pukhov G.E. Parallel-to-serial digital grids for integrating differential equations. Electronics and MoI. issue 3, Kiev, 1974-. 2.Dvtorskoe certificate of the USSR 373735, cl. G About F 15/00, 1972 (prototype).