Science

In early days, human being counted on fingers. When ten fingers are not adequate, stones, pebbles, or sticks were used to indicate values. This method…

The report title is Social networking and Accounted management system software. Main objective of this report is to develop the security system of our society and…

*How is a computer defined? *The computer comes from the word “compute“ which means to calculate. *So a computer is normally considered to be calculating…

• A computer system can be useful, only when it is able to communicate with its external environment (its users). • The input –output devices…

In this chapter we will learn why computers use binary numbers instead of decimal numbers and how the basic arithmetic operations are performed the computer…

In binary coding, every symbol that appears in the data is represented by a group of bits. The group of bits used to represented a…

All the computer systems perform the following five basic operations, for converting row input data into information, which is useful to their users: » Inputting » Storing…

Principles of computer security is – Principle of easiest penetration: An intruder must be expected to use any available means of penetration. The penetration may…

The secondary storage of a computer system is non-volatile. It how low cost per bit stored, but it generally has an operating speed far slower that…

An operating system (OS) is an integrated set of programs that controls the resources (the CPU, memory, I/O devices, etc) of a computer system and…

A medium is something, which can be used for presentation of information is called multimedia. There are two ways to present some information- Unimedium presentation, Multimedia presentation. A multimedia…

E-commerce describes financial transactions that are conducted electronically over a computer network –Includes physical products, digital products, and services –Digital products such as News, music,…