Computer

 Computer

What is computer ?
A computer is a programmable machine designed to sequentially and automatically carry out a sequence of arithmetic or logical operations. The particular sequence of operations can be changed readily, allowing the computer to solve more than one kind of problem. An important class of computer operations on some computing platforms is the accepting of input from human operators and the output of results formatted for human consumption. The interface between the computer and the human operator is known as the user interface.Main article: History of computer hardware

  

History of computing

 

The first use of the word computer was recorded in 1613, referring to a person who carried out calculations, or computations, and the word continued with the same meaning until the middle of the 20th century. From the end of the 19th century the word began to take on its more familiar meaning, a machine that carries out computations

Programs

The defining feature of modern computers which distinguishes them from all other machines is that they can be programmed. That is to say that some type of instructions the program can be given to the computer, and it will carry process them. While some computers may have strange concepts instructions" and output see quantum computing modern computers based on the von Neumann architecture often have machine code in the form of an imperative programming language.

  

Programming language

There are many electronics has in the world of this mobile, computer, telephone, calculater, clock etc 
Programming languages provide various ways of specifying programs for computers to run. Unlike natural languages, programming languages are designed to permit no ambiguity and to be concise. They are purely written languages and are often difficult to read aloud. They are generally either translated into machine code by a compiler or an assembler before being run, or translated directly at run time by an interpreter. Sometimes programs are executed by a hybrid method of the two techniques.

Memory

A computer's memory can be viewed as a list of cells into which numbers can be placed or read. Each cell has a numbered address" and can store a single number. The computer can be instructed to put the number 123 in mobile othe cell numbered 1357 or to add the number that is in cell 1357 to the number that is in cell 2468 and put the answer into cell 1595. The information telephone stored in memory may represent practically anything. Letters, numbers, even computer instructions can be placed into memory with equal ease. Since the CPU does not differentiate between different types of information, it is the software's responsibility to give significance to what the memory sees as nothing but a series of numbers.