11.   Apple computers use a different operating system, Mac-OS.

12.   Another computer uses the spider information to index every word on each of these pages.

13.   Before the use of digital cameras, images could be transferred to a computer using a scanner.

14.   Because a computer uses the data in its main memory chips millions of times every second, the computer must constantly pause to decompress the data before processing.

15.   A driver is the software that lets the computer use a device.

16.   A computer will often use some of its RAM as a buffer area for holding data until its central processing unit can transfer the information to a device.

17.   A number of other computer scientists and engineers said the probability of encountering the problem would vary wildly depending upon what software the computer was using.

18.   According to Spafford and other security experts, the problem lies in the fact that so many powerful and interconnected computers use Microsoft products.

19.   Aimed at the mobile professional, the hand-held H-P computer uses Windows CE, the operating system developed by Microsoft especially for those small computers.

20.   All current model computers use what are called SIMMs for memory expansion.