The Book of the World is digital

This week in the teacher's recommendation I read the "World is Digital" this book, did not think about this aspect of the books, when reading this book, I have a lot of unexpected harvest. Get a lot of valuable information, some small problems in life have been answered, the content of their own professional learning has a deeper understanding.

In this age of our lives, we are surrounded by numbers every day and the information we learn is constantly changing. Open the computer can see a lot of news, not only the country and other countries. These rely on the internet to spread so quickly, and the Internet relies on computers to show people. Brian W. Kernighan, the world's leading computer scientist, writes this book about computers and the Internet that people in the mathematical age should know about.

In the first chapter, I learned to distinguish between the functional and physical characteristics of a thing. For example, as far as the computer is concerned, its function seems to have changed from the beginning to the present--computing and related work. However, its internal structure and its materials are changing at an alarming rate. More and more quickly and more portable, these are the performance of physical characteristics changes. In the course of reading I was shocked by the phrase "CPU can dominate my destiny". This reminds me of a lot of American high-tech blockbusters, human beings think that computers will not be intelligent to rebel people, but in the end is the computer generated by self-consciousness destroyed, from then on, the Earth is dominated by robots. Think about it and feel wary of panic: if one day, we are all our own home computer or mobile phone slavery, that would be a terrible feeling! But it has to be said that now the rapid development of computers, intelligence has indeed become an important area of development, its development will not deviate from the trajectory of human control, but also an uncertain problem. Hardware summary of the last paragraph also gave me a great touch, no matter how high-energy computer, our daily life of emotion, art or the truth and beauty in a period of time can not be controlled by the computer, we must cherish the life of the natural beauty of everything.

No matter how much hardware, the computer must have software to enrich themselves. The hardware of a computer is controlled by software. Hardware-only computers are called bare metal. According to the degree of hardware-related, the computer software is usually divided into system software and application software. The software that the user uses directly is usually the application software, and the application software usually directs the computer hardware to complete its function through the system software. The most important system software is the operating system, which completes the command of the computer operation of the various details, that is, the operating system is used in computer systems to command and manage its own software. In essence, when using a computer, we do not directly use the computer's hardware, and we deal directly with the application software. We use the application software, the application software in the "Behind the scenes" with the operating system, and then by the operating system to command the computer to do the corresponding work.

With the rapid development of computer science and technology, the development of computer hardware and software is changing rapidly. People on the computer application requirements are also more and more high, no longer satisfied with the simple word processing and Internet browsing information and other basic operations, but hope to be able to make a variety of computer settings more easily, can analyze, eliminate some common failures, can do their own routine maintenance of the computer, and skilled use of various auxiliary tools software, Improve the efficiency of study and work.

The Book of the World is digital