A computer virus is also a software program that damages our computer files, and steals secure information credit card details, debit card details, passwords saved in the computer.
The self-replicating program was first created by John Von Neumann in 1949. It goes on its own, it is considered to be the world's first virus.
Similarly in 1970 Bob thomas created creeper virus using this self replicating program. Which only showed the message "I am the creeper catch me if you can". The reaper program was created to delete this virus.
Richard Skrenta, who fell in 9th class in 1982, created a virus named Elk cloner. Who made to joke with his friends. Skrenta wrote the code on its Apple 2 computer and spread the virus through a floppy disk of games.
When a friend of skrenta used it 50 times, the virus would activate and show a poem on the screen.
After this, two brothers named Basit Amjad of Pakistan formed Brain Virus for IBM PC. Basit and Amjad had created a medical software. The virus was created to prevent piracy of software.
When someone used this software illegally, they were displayed phone numbers with a warning message. Now people started calling these numbers for a solution. Through these calls Basit and Amjad would know that this software is being used illegally. This virus infects the boot sector of the computer and also slows down the computer.
Now all these viruses did not harm the data of any computer. Gradually, such viruses were developed whose victims have become a lot of people today.
The word pencil was derived from Penicillus in Latin. Penicillus means tail because in the early days the tail hair of animals was used to brush.
In those days, lead was used to mark. In 1564, a terrible storm occurred in Borrowdale, England, as a result of which a large tree fell down.
There the shepherds of the goats noticed that the roots of this tree have got a lot of black material. Initially they thought it was coal and lit it but it was not burning like coal.
At that time they started calling him black led, later named Graphite. This graphite was used to mark goats, and in the England market graphite was sold in paper.
People started writing from this graphite in the late 16th century. The graphite was so soft and delicate that there was difficulty in writing. So he started writing with a thread.
In 1560, the first Italian couples used a tree named Juniper for pencils, they would pierce the graphite by sticking it inside a wooden piece of this tree.
In 1660’s, he started making pencils in Germany with wooden pieces. Scrape 2 pieces of wood and place graphite between them and paste it.
After this there was a war between England and France during 1790’s. After this war, England made graphite for France. There was a shortage of graphite after this ban. The French minister asked one of his commanders and scientist Nicolas-Jacques Conté to find a solution.
After a few days of research nikolas made a mixture of clay and graphite and water in a box and kept it to dry. When this mixture dried, it was burnt in a furnace.
During this time, nikolas noticed another thing that there is a difference in the writing of pencil on reducing and increasing the clay.
From there, pencils started to be made with different names like H HB. In 1795 Nicolas-Jacques Conté was patented for this invention. In the 19th century, eraser was also introduced with pencil.
The self-replicating program was first created by John Von Neumann in 1949. It goes on its own, it is considered to be the world's first virus.
Similarly in 1970 Bob thomas created creeper virus using this self replicating program. Which only showed the message "I am the creeper catch me if you can". The reaper program was created to delete this virus.
Richard Skrenta, who fell in 9th class in 1982, created a virus named Elk cloner. Who made to joke with his friends. Skrenta wrote the code on its Apple 2 computer and spread the virus through a floppy disk of games.
When a friend of skrenta used it 50 times, the virus would activate and show a poem on the screen.
After this, two brothers named Basit Amjad of Pakistan formed Brain Virus for IBM PC. Basit and Amjad had created a medical software. The virus was created to prevent piracy of software.
When someone used this software illegally, they were displayed phone numbers with a warning message. Now people started calling these numbers for a solution. Through these calls Basit and Amjad would know that this software is being used illegally. This virus infects the boot sector of the computer and also slows down the computer.
Now all these viruses did not harm the data of any computer. Gradually, such viruses were developed whose victims have become a lot of people today.
The word pencil was derived from Penicillus in Latin. Penicillus means tail because in the early days the tail hair of animals was used to brush.
In those days, lead was used to mark. In 1564, a terrible storm occurred in Borrowdale, England, as a result of which a large tree fell down.
There the shepherds of the goats noticed that the roots of this tree have got a lot of black material. Initially they thought it was coal and lit it but it was not burning like coal.
At that time they started calling him black led, later named Graphite. This graphite was used to mark goats, and in the England market graphite was sold in paper.
People started writing from this graphite in the late 16th century. The graphite was so soft and delicate that there was difficulty in writing. So he started writing with a thread.
In 1560, the first Italian couples used a tree named Juniper for pencils, they would pierce the graphite by sticking it inside a wooden piece of this tree.
In 1660’s, he started making pencils in Germany with wooden pieces. Scrape 2 pieces of wood and place graphite between them and paste it.
After this there was a war between England and France during 1790’s. After this war, England made graphite for France. There was a shortage of graphite after this ban. The French minister asked one of his commanders and scientist Nicolas-Jacques Conté to find a solution.
After a few days of research nikolas made a mixture of clay and graphite and water in a box and kept it to dry. When this mixture dried, it was burnt in a furnace.
During this time, nikolas noticed another thing that there is a difference in the writing of pencil on reducing and increasing the clay.
From there, pencils started to be made with different names like H HB. In 1795 Nicolas-Jacques Conté was patented for this invention. In the 19th century, eraser was also introduced with pencil.
