The original language required the use of line numbers for every line of code. Extra lines could be inserted by giving them intermediate line numbers, e.g., line 15 could be inserted between lines 10 and 20. The programmer gave a line number for each statement, and the sequence of execution was determined by the order of line numbers. Whether the version in use was compiled or interpreted, it was easy and quick to make changes in one's program and see the effects. The original version of BASIC was a compiled language and quite efficient on the slow computers of the early 1960s however, a majority of people were first introduced to pared-down interpreted versions, particularly those that ran on early microcomputers, and they did not support many of the language features of Dartmouth BASIC. The original MySQL API was defined for C programming, but the Free Pascal developers have written a set of corresponding procedure/function call definitions which allow Free Pascal or Lazarus programmers to use the library of MySQL function calls.Ī very important part of any API is its documentation, and any conversion of an API library to a different programming environment ( e.g., from C to Free Pascal) requires a really excellent set of descriptive documents.īASIC is an acronym that stands for Beginner's All-purpose Symbolic Instruction Code.Ī computer language once popular as a training tool, or as an experimental tool for programming, it was developed in 1963–1964 at Dartmouth College in Hanover, New Hampshire, U.S.A. Many compilers (including Free Pascal) allow the programmer to embed Assembler sections within the high-level source code such sections are, of course, only useful using the processor for which they are intended, whereas a Compiler can write programs which will work on a variety of different processors.Īpplication Program Interface: a set of tools such as procedural/functional calls to allow programmers to use a software package.Īn example is the API for the MySQL database system its authors have published a set of definitions for procedure/function calls, with detailed specifications for each of the parameters or arguments for each function. Assembly language is the list of codified instructions that a programmer writes, which the assembler translates into machine code.Īn assembler differs from a Compiler by being processor-specific ( i.e., different assemblers for i386, MC68000, ARM processors, etc.) and by being much more low-level: it deals with very specific instructions to move data and perform detailed arithmetic. Into a binary sequence such as 01110010 which the machine can execute. LD a,b # move the contents of location a into location b ![]() military were actually written in Ada.Īn assembler converts human-readable symbols (that represent machine instructions) into the actual binary instructions that the computer executes. Department of Defense decreed that all programming by its contractors must be done using Ada, but unfortunately there was a dearth of suitable compilers and software development tools, and the language never achieved popularity. (There was no romantic involvement with Babbage.)Īda is a high-level procedural language, with very similar structure and syntax to Pascal, but with several extensions. Ada King, Countess of Lovelace and daughter of the poet Lord Byron, was a student/colleague of Babbage and wrote a program to drive the difference engine she can be regarded as the first computer programmer. Babbage (1791–1871), an Englishman, was one of the earliest exponents of computer design and published a design for a "difference engine" (which he never actually built). ![]() # A B C D E F G H I J K L M N O P Q R S T U V W X Y ZĬomputer language derived from Pascal and Modula, and named after Charles Babbage's lady friend. ![]() Note that the buildfaq also has a FPC/Lazarus glossary You are encouraged to continue adding things to it that .
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