求计算机英语好的～～帮帮忙～

求计算机英语好的～～帮帮忙～
Desktop system units typically contain the system's electronic components and selected secondary storage devices Input and output devices,such as a mouse,keyboard,and monitor are locted outside the system unit
Notebook system units are portable and much smaller.these units contain the electronic components.selected secondary storage devices,and input devices(keyboard and poining device).located outside the sys-tem unit,the monitor is attached by hinges.
Personal digital assistant(pda) system units ars the smallest and contain an entire computer system including the electronic components,secondary storage,and input and output devices
急用~大家帮帮忙谢谢了~

桌面系统单元典型的包括系统的电子元件和所选的次级存储器的输入和输出设备,例如鼠标,键盘,和显示器都被放置在系统单元的外部.
笔记本系统单元是便携式的而且更小,这些单元包括电子元件,次级存储器,和输入设备（键盘和poining设备）设置在系统单元的外部,显示器被铰链固定住.
个人数字助理的系统单元是最小的,包含了一个整个的计算机系统,包括电子元件,次级存储器,和输入、输出设备