Size, computing power and storage capacity are the key factors.
Mainframes tend to be large physically and provide server power to multiple computers and users.
They often have hundreds of megabytes of storage. Thirty years ago, most companies depended on mainframes for their computer power, but today many companies are replacing mainframes with less centralized networks of personal computers. To submit your own question or find an index to previous questions and answers, click here . Using the Internet to meet someone online is a very convenient, effective and enjoyable experience. More than 50,000 people a day become members of these fast growing online clubs.