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1______________________________. Often, we want the computer to do the same thing again and again.
2_________________________________.
First though, a computer needs to know where, within its built-in memory, to store information and how to work on it. The basic program is called an operating system (or disk operating system).
3_____________________________. A recent development from MS-DOS lets you tell the computer what to do by “pointing” at things (words or pictures) on the screen. 4_____________________________.
Computers only do what they are told to do.
So standard instructions – programs – are produced.
One popular operating system, introduced with the IBM PC, is called MS-DOS (from (M)icro(S)oft (D)isk (O)perating (S)ystem).
This easy to use system is called Windows.