It also covers the installation, testing and validation of instrumentation, computer hardware and software, and communications equipment.

它也涵盖了仪器仪表、计算机软硬件和通讯设备的安装、测试和验证。

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The essay presents how to use Virtual Machine software to demonstrate the setup of computer system bottom layer and the installation of operating system to students in teaching.

该文介绍了如何使用虚拟机软件，在计算机教学中为学生演示计算机系统的底层设置和操作系统地安装。

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Responsibility of the job: the installation of computer systems, maintenance, hardware upgrades, maintenance and repair, software upgrade maintenance.

工作职责：计算机系统的安装、维护，硬件的升级、维护及送修，软件的升级维护等。

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