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Lady Ada Lovelace was the first computer programmer, while Charles Babbage introduced the concept of a programmable digital computer. Programming languages have evolved over generations from machine languages in the 1940s-1950s, to assembly languages in the early-mid 1950s, to high-level languages in the mid-late 1950s with the introduction of compilers. More advanced languages were developed in the 1970s like SQL and Visual Basic that used graphical interfaces, while artificial intelligence and logical programming languages emerged in the 1990s modeled after neural networks and the human brain.

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111 views2 pages

Comp Handouts

Lady Ada Lovelace was the first computer programmer, while Charles Babbage introduced the concept of a programmable digital computer. Programming languages have evolved over generations from machine languages in the 1940s-1950s, to assembly languages in the early-mid 1950s, to high-level languages in the mid-late 1950s with the introduction of compilers. More advanced languages were developed in the 1970s like SQL and Visual Basic that used graphical interfaces, while artificial intelligence and logical programming languages emerged in the 1990s modeled after neural networks and the human brain.

Uploaded by

lorei
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Evolution of Programming Languages


Lady Ada Lovelace
Known to be the first computer programmer.

Charles Babbage
He introduced the concept of digital programmable
Computer. This added up a lot to the history of computer.

A. 1940-1950’s (1GL – 1st Generation Languages)


o Machine Languages (only language that a computer can understand)
 Line by Line and run
Uses Binary Code: zero, and one
Relatively quick and efficient
It is Direct
Machine Dependent: If used for one machine, used for other too.
Not portable
 EDSAC : Electronic Delay Storage Automatic Calculator by Professor Sir Maurice Wilkes in 1952

B. Early to Mid 1950’s (2GL – 2nd Generation Languages)


o Symbolic or Assembly Language

-Uses mnemonics (codes / symbols)


: Needs to be grouped before ran
: Shortened symbols for command
: Less difficult to learn and use
 Write , Input Symbol, and run
 Very hard for human to understand codes
Codes needs an assembler to translate mnemonic into machine language
 AUTOCODE by Alick Glennie for Mark 1 in 1952

A type of computer in that time.

C. Mid to late 1950’s (3GL – 3rd Generation Languages)


o High Level Languages
 Divided into modules (groupings) and run
 Easy to Understand

The First Compiler was used in this generation


-by Grace Hopper
-“translator”
-translates high level languages ro machine languages
Use of data structures and control structures for code re-use
 FORTRAN, BASIC, PASCAL, C, ADA

D. Early 1970’s (4GL – 4th Generation Languages)


o More Advanced than high level languages
Non-procedural specification languages

Top to bottom

Uses graphics such as buttons, and objects that can be moved and clicked
Incorporated graphical user interfaces
Commands are done through click and drag actions
 SQL, VB
E. 1990’s (5GL – 5th Generation Languages)
o Ai (Artificial Intelligence)
o Logical Programming Languages
Operates on problem solving based on limitations / conditions
Uses neural network : computer architecture

Wirings: connection

Moduled after a human brain


 Mercury , Prolog, Opss
_____________________________________________________________
IDE -- bluej

-where u build program


-has own compiler
-has debugger

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