Development of computer languages

Definition of computer
Language:
 Computer language are the languages by which a user
command the computer to work on the algorithm
which a user has written to het an output
 Two types of computer languages:-
A. High level language
B. Low level language

A low level language is a programming language that
provides Little
or no abstraction form a computer’s instruction set
architecture. A
Lower language is used in two generation of computer.
1. First Generation
2. Second Generation
Low level language

 Represent the very early, primitive Computer languages that
consisted entirely of 1’s and 0’s- The actual language that the
computer understands (machine language).
First Generation languages (1GL)

Represent a step up from the 1GL. Allow for the use of symbolic
names instead of just numbers. Second generation languages are
known as assembly languages. Code written in an assembly
language is converted into machine language (1GL).
Second Generation languages (2GL)

 Direct memory management
 Little-to-no abstraction from the hardware
 Register Access
 Statements usually have an obvious correspondence with
clock cycles
 Superb performance
Characteristics of Low Level
Languages

Advantages
 Computational speed is very Fast
 Directly understandable by Computer
Disadvantages
 Development of a program in machine language is very
time consuming.
 Error correction is very tedious Process

 High level programming languages allow the specification
of a problem solution in terms closer to those used by
human beings. These languages were designed to make
programming far easier, less error –prone and to remove
the programmer from having to know the details of
internal structure of a particular computer. This language
is used in third generation
High Level Languages (HLL)

Third Generation languages
 With the languages introduced by the third
generation of computer programming, words
and commands (instead of just symbols an
these languages d numbers)were being used.
These languages therefore, had syntax that was
much easier to understand. Third generation
languages are known as “high level languages”
and include C, C++,java, and javascript, among
other.

TYPES
 C++
 VISUAL BASIC
 JAVA
 JAVASCRIPT

C++
 C++ is statically typed, free-form , multi-paradigm, complied,
general-purposes programming language. It is regarded as a
“middle-level ” language, as it comprises a combination of
both high level and low –level language features.
 LANGUAGE FEATURES:-
 Operators and Operator Overloading
 Templates
 Objects
 Polymorphism

Visual Basics
 Visual basic (VB) is the third generation event-driven
programming language and integrated development
environment (IDE) from Microsoft for its COM programming
model. Visual basic is relatively easy to learn and use.

CHARACTERISTICS
 Interpreted
 Dynamic constructs (open classes,message-stylemethods,etc)
 Poor performance
 Concise code
 Flexible syntax (good for internal DSLs)

Advantages
 There are simple to adopt due to their English like
structure of Language
 They are easy to maintain and debug.
Disadvantages
 The program written in high level language are less
efficient as they take more execution Time.

Development of computer languages

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Development of computer languages