Computers
There are two major types of hardware used in a CAD system. Computer and input/output (I/O) devices. In the early days of CAD. Some commercial CAD systems used proprietary computers. Today, nearly all CAD software runs on a general-purpose computer.
Depending on the complexity of the CAD package, it may require a mainframe computer, a minicomputer, or simply a microcomputer. In general, the more functionalities a CAD system provides, the more powerful the computer needed. Three dimensional solid modelers require much more computing than do two-dimensional drafting systems; thus, they need more powerful computers. Systems that integrate engineering analysis or simulation packages generally are more computation-intensive. A powerful computer not only speeds up the response of a CAD system, but also can support multiple users without significant perform


計算機(jī)
兩大主要類型的硬件使用于CAD系統(tǒng)，計算機(jī)和輸入/輸出設(shè)備。在CAD的早期，一些商業(yè)的CAD系統(tǒng)使用于專業(yè)計算機(jī)。如今，幾乎全部的CAD軟件都運(yùn)用于普通用途的計算機(jī)。
根據(jù)CAD命令的復(fù)雜性，它可能需要一臺大型計算機(jī)，一臺迷你型計算機(jī)，或僅一臺微型計算機(jī)，大體上，CAD系統(tǒng)提供更好的功能性，需要更有強(qiáng)的計算機(jī)。三維空間建模比二維線型建模需要更好的計算機(jī)；因而，他們需要更有力的計算機(jī)。那使成整體分析的系統(tǒng)或一般模擬命令是更多更強(qiáng)的計算。一臺強(qiáng)的計算機(jī)不僅加速CAD系統(tǒng)的運(yùn)行，而且也能支持多個使用者，并不降低使用性能。
幾個其他的參數(shù)和關(guān)于計算機(jī)的成分，也不得不被考慮。
隨機(jī)存取儲藏器容量
磁帶容量
專用圖形加速器
磁帶裝置