EASY TO LEARN

                                       COMPUTER DEVELOP ABACUS: This was the first computer launched in between 300 to 500BC. There is no confirm who invent the abacus computer. It was used for arithmetic calculation(addition and subtraction). It was travel many places like (Japan, Chinese, Egypt and other places) after that it modify and work better every time. It is used to boost the mind of children's. It is made up of wood and beads for calculation. TYPES OF ABACUS: ·         DUST ABACUS ·         LINE ABACUS ·         GROOVED ABACUS ·         ANCIENT CHINESE ABACUS ·          SOROBAN  JAPANESE ABACUS NA PIER'S BONES: It was launched by john Napier in 1617 in Edinburgh. This is also used for arithmetic calculation but in this multiplication and division are...

MS DOS COMMANDS What is ms dos? MS DOS is a programming command that can help to operate the system by coding. NOW, Below we are going to learn about the commands. First we learn to open the MS DOS COMMANDS. Press WINDOW KEY + R And then type CMD and press ENTER. C:users\(it will open on your cmd) C shows you that you are in local disk C. USERS shows that user directory are you open in ms dos.   HERE, We will use directory(other name of folder) all time. You want to change your local disk drive. Syntax : simply write d:     (and then press enter) you drive are change now, Now you are in local disk D. If you want to see the directories in local disk D or in another directory. Syntax :  dir       (and then press enter) To open the directory. Syntax :  cd folder name     (and then press enter) To go back syntax :  cd..      (and then press enter) To go on first directory syntax:  cd\    ...