The architecture of symbolic computers

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VSA: Vector Symbolic Architectures for Cognitive Computing in Neural Networks | Ross Gayler

Project Gutenberg 0 editions. Google Books — Loading Local Book Search. Swap 4 want. Popular covers. Rating Average: 4. Is this you? Become a LibraryThing Author. Focuses on the design and implementation of two classes of non-von Neumann computer architecture: those designed for functional and logical language computing.

The architecture of symbolic computers

Recently added by. Assembly language is designed to be easily translated into machine language.

Although blocks of data may be referred to by name instead of by their machine addresses, assembly language does not provide more sophisticated means of organizing complex information. Like machine language, assembly language requires detailed knowledge of internal computer architecture. Algorithmic languages are designed to express mathematical or symbolic computations.

They can express algebraic operations in notation similar to mathematics and allow the use of subprograms that package commonly used operations for reuse. They were the first high-level languages. It was intended for scientific computations with real number s and collections of them organized as one- or multidimensional arrays. Its control structures included conditional IF statements, repetitive loops so-called DO loops , and a GOTO statement that allowed nonsequential execution of program code.

It was immediately successful and continues to evolve.

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ALGOL algo rithmic l anguage was designed by a committee of American and European computer scientists during —60 for publishing algorithms , as well as for doing computations. Like LISP described in the next section , ALGOL had recursive subprograms—procedures that could invoke themselves to solve a problem by reducing it to a smaller problem of the same kind. ALGOL introduced block structure, in which a program is composed of blocks that might contain both data and instructions and have the same structure as an entire program.

Block structure became a powerful tool for building large programs out of small components. ALGOL contributed a notation for describing the structure of a programming language, Backus—Naur Form, which in some variation became the standard tool for stating the syntax grammar of programming languages. ALGOL was widely used in Europe, and for many years it remained the language in which computer algorithms were published.

Symbolics I - machine architecture - a symbolic processor architecture for VLSI implementation

Many important languages, such as Pascal and Ada both described later , are its descendants. LISP lis t p rocessing was developed about by John McCarthy at the Massachusetts Institute of Technology MIT and was founded on the mathematical theory of recursive function s in which a function appears in its own definition.

COA [Module 03 - Lecture 07]: Microinstructions and Microprograms

LISP uses a very simple notation in which operations and their operands are given in a parenthesized list. Although this appears awkward, the notation works well for computers.

LISP also uses the list structure to represent data, and, because programs and data use the same structure, it is easy for a LISP program to operate on other programs as data. Its capacity to structure data and programs through the composition of smaller units is comparable to that of ALGOL.

It uses a compact notation and provides the programmer with the ability to operate with the addresses of data as well as with their values. COBOL co mmon b usiness o riented l anguage has been heavily used by businesses since its inception in A committee of computer manufacturers and users and U.