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Computers only do what they are told to do. 1______________________________. So standard instructions – programs – are produced.
First though, a computer needs to know where, within its built-in memory, to store information and how to work on it. 2_________________________________.
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_____________________________.
Often, we want the computer to do the same thing again and again.
The basic program is called an operating system (or disk operating system).
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.
