英语高手来，帮忙翻译一下

The computer system is composed of the hardware and the software. Hardware is the physical part of the system. Once the hardware design completed, it is difficult to amend, and also spend big. Software program to control the collection of hardware, easy to modify than hardware. The reason why the computer useful, is for them to solve many different types of problems is a common machine. Relatively speaking, each machine can only be dedicated to solve the problem for a class. Through the system with a different instruction set, which is equipped with different software, use the same hardware to solve different problems