All that I know

This post gives you the basic information on computer hacking. Hacking is basically an unauthorized access to a computer or a network of computers and it also means simply entering a specific computer or a network without permission. How do people enter like this?

Most hacking involves the use of the protocols. Even a home computer can be used to host a website. A computer that acts as a host uses HTTP and FTP for transfer of file across the Internet. A computer that is simply connected to the web will be given a separate Internet Protocol address. Some of the computer’s default settings may allow the disclosure of all these addresses and we are unaware of it until we are affected. In some of the sites there are some utilities that assist in hacking.

In order to protect our computer from being hacked we should use a firewall so that it prevents the sending of data and the address to unauthorized sites. The password that we set for e-mail or any other Internet based account should be very long and obscure. I think I have given some useful information to the readers on how to prevent your computers from being hacked.

A computer is an electronic device that is used to get an input from the user,
process it into useful information. It has two major components namely hardware
and the software. Hardware- they are electronic components that interact with
the software. Simple examples of hardware are input and output devices. Software
is a set of instructions that makes the hardware perform a particular set of tasks.
Software can be divided into 2. They are system software and application software.
System software is a software that is used control the entire operations of the system
e.g., Windows -98, XP, Vista etc., Application software is a software that is used to
handle only specific tasks e.g., Photoshop for animating, Tally for accounting etc.,

Generations of Computer:

1st and 2nd Generation (1951-1963)

• Very large
• More space
• Vacuum tubes were unreliable.

3rd and 4th Generation (1963 -present)

• Smaller
• Faster
• Used transistors and IC’s

Types of Computer:

Minicomputers:

• Used by small and medium size organizations and institutions.
• Operated by specialists.

Mainframes:

• Designed to perform complex manipulations.
• They can work for up to 6 months without being shut down.
• Powerful and expensive.

Supercomputer:

• Designed to perform simple calculations.
• Generates enormous amount of heat and they must be cooled.
• They use Linux or UNIX as OS.