As I study my course Computer System Design and Programming I have learn the importance and why should we have a system in everything we do. System is very important to all of us. Even a housewife at home doing household with a proper system with everything she do. Her chores become simple and easy. With a simple system to use at home it can make your work faster and save more time. What more is you use the right system on your computer. We believe how the computer help us and how it affect out lifestyle now. Also if you use the system for your computer it can helps you more and can finish more job. There are many kind of system that you can browse and try on your computer. Of course the every system had it’s different specification. There are systems and computer specification that has the specified function that you need and expected for your computer like the AdvancedMC PCI that is used for hot-swappable and field-replaceable mezzanine cards. There is Kontron Processor AMCs are compliant with PICMG’s AMC.x specifications, and can achieve extremely high performance and data throughput in a very small form factor. And also AdvancedTCA. AdvancedTCA (ATCA) is the new standard for telecom applications bringing the features of proprietary architectures and the CompactPCI standard with his high packing density and RAS (reliability, availability, serviceability) together. The computer specification depends on how you will need the system of the computer.