The Disk Operating System must be loaded before other programs can be used. If a disk does not contain DOS instructions, a disk with DOS on it must be booted first. Computers have keys similar to a typewriter. They also have a number of keys that are different and have special functions beyond typing. May also be used in combination with other function keys.
Some keyboards contain additional control keys.
The directions are up, down, left and right. C. Diskettes 1. A variety of diskettes are available. The market is currently working toward larger capacity and smaller size. Use only felt tip pens when writing on labels already on the diskette.