Most newer machines have at least 8 MB to operate very well. At least 8 MB is needed for programs which use lots of sound, pictures, or QuickTime movies. If you plan to run multiple applications at once and some of them graphic intensive you almost always need more than 8 MB of Ram, although 8 MB will work if you limit graphics and sound. To see how much RAM your computer has click under the Apple and select About this Macintosh. The example at left shows a Mac with 4 MB of built RAM, but the total RAM has been increased to 10 by using virtual memory.
Disk storage works much like a filing cabinet .
Floppy disks and hard disk drives, the two most common kinds of disk storage, keep copies of your files and programs after you turn off your computer. Storage space is measured in k, MB, or gigs. A 3.5 inch low density floppy disk will have about 780k of storage space. Increasing memory available for applications . Computer programs are preset to run with only a minimal amount of RAM memory.