先决条件 – 计算机分类
大型计算机和小型计算机是膝上型计算机的类别，其中大型计算机提供了比小型计算机更多的选择以及高性能的内存和处理速度。
一开始，大型机是用来负责交易过程的，主要用作服务器。
而小型计算机是中型小型计算机，个人将其单独使用或同样作为高端设备使用。
我们来看看大型机和小型机的区别：
| S.NO |
Mainframe |
Minicomputer |
|---|---|---|
| 1. | In mainframe computers, large size of disk is used. | While in a minicomputer, small size of disk is used. |
| 2. | Mainframe computers have large memory storage. | While minicomputers have small or less memory storage than mainframe computer. |
| 3. | The processing speed of mainframe computer is faster than minicomputer. | While the processing speed of minicomputer is slower than mainframe computer. |
| 4. | Mainframe computer is costlier than minicomputers. | Whereas minicomputers’s cost is less or it is inexpensive. |
| 5. | The first microcomputer was invented by the team leader Bill Pentz. | The first successful mainframe computer is invented by IBM. |
| 6. | Mainframe computers support thousand or millions of users simultaneously. | Whereas minicomputers support hundreds of users at a time. |
| 7. | Mainframe computers can have a processing speed in the range of 3-4 MIPS to as high as 100 MIPS. | Whereas minicomputers can have a processing speed in the range of 10 to 30 MIPS. |