Computer Hardware
Para 1
Computer hardware can be divides into four categories: input hardware, storage-hardware, processing hardware, and output hardware.
生词：
hardware 硬件
category 种类，类别
process 处理
计算机硬件能被分为四类：输入硬件，存储硬件，处理硬件和输出硬件。
Para 2 Input Hardware
The purpose of input hardware is to collect data and convert it into a form suitable for computer processing. The most common input device is a keyboard. It looks very much like a typewriter keyboard. Its key are arranged in the typical typewriter layout. There are also a number of additional keys. They can be used to enter special computer-related codes. Although it isn't the only type of input device available, the computer keyboard is the one which is most generally used by the business community.
生词：
form 格式；形式；形状；样子
suitable 合适的
additional 额外的
输入硬件的目的是收集信息并将其转化为能被计算机处理的合适的格式。最常见的输入设备是键盘。它看起来和打字机键盘很像。它的按键采用打字机的布局，但也有许多额外的按键。它们能被用来输入特殊的与计算机相关的编码。尽管它不是唯一的输入设备，但它是被商业街界使用的最广泛的。