Band Theory of Solids

UNIT - I

COMPTER FUNDAMENTALS & PROBLEM SOLVING

Kishore Kumar M UNIT-I

UNIT-I

Contents :

➢ Introduction to computers –Computer Systems

➢ Computing Environments

➢ Computer Languages

➢ Creating and running programs

➢ Software Development method

➢ Algorithms

➢ Pseudo code

➢ Flowcharts

➢ Applying the Software Development Method

Introduction to Computers-Computer Systems:

COMPUTER : The term COMPUTER has various definitions. If put in a Laymen‟s language.

“A computer is a simple electronic machine that helps you solve problems”

and if put in a technical manner

“A computer is a high-speed electronic device which follows instructions and is capable of performing arithmetic and logic operations.”

(OR)

The computer is “an electronic device for making calculations or controlling operations that are expressible in numerical or logical terms”.

1
Computer Programming By Raj Mohammed UNIT-I

A computer is a data processor. It can accept input, which may be either data or instructions or both. The computer remembers the input by storing it in memory cells. It then processes the stored input by performing calculations or by making logical comparisons or both. It gives out the result of the arithmetic or logical computations as output information. The computer accepts input and outputs data in an alphanumerical form.

Characteristics of a Computer: There are various characteristics of computers which make this advantages possible.

1.Speed: These can carry out