The Book of the World is digital

This book is an introductory book written by the author to ordinary readers about computers and the Internet that people in the mathematical age should know about. This book "The World Is Mathematics" is a popular science books. For the majority of people is very helpful, whether it is to study the students of the major, should be hundred profit and different harm. So I started reading this book.

The first part of the hardware, hardware in the computer plays a vital role, the computer is composed of hardware and software, therefore, the role of hardware is obvious, the early computer is a computer as a basic computing element, the computer is composed of CPU and memory, the operator, but also the input device and output device , the system of transmitting information and data between parts by bus is von Neumann system. The main component of the computer is the CPU, also known as the central processing Unit.

"The World is Mathematics" is the world's top computer scientist Brian.w.krmighan to the general reader of the introductory book, tell the depths of the internet age people should be in-depth knowledge about computing and the Internet. This book is based on the computer knowledge popularization course of Stanford computer Professor, which is an excellent introductory book for My Computer idiot. The book details the so-called programming, software, viruses, how the Internet is formed and connected, easy to understand, than the school textbooks understand more. The first book I read in 2016. After reading it is known as one of the founders of the famous UNIX, "C programming Language" author Kernighan wrote. This paper mainly introduces the related concepts of hardware, software and communication, which is a popular science book. Write very clearly, although the content is not much, the harvest is limited, but still read very comfortable, a good teacher in front of you in the logic clear with concise and accurate language to you have been not aware of the essence of things suddenly pointed out the feeling.

In the second chapter bits, bytes and information representations, we know that the simulation system sometimes has its advantages, such as the clay version, stone carvings, parchment, books and photos and other ancient media, have experienced the digital format has not experienced the time test. That's a good sentence. Many more than 10 years ago, the digital format, especially the proprietary binary format, is now hard to read. Also, information that was previously stored on floppy disks and tapes is now difficult to find floppy drives and tape drive to read. Now the information stored on the disc, more than 10 years later do not know if you can find the optical drive to read.

When I was 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, it 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.

One of the questions I've been puzzled about during the reading process has been answered: why is it so much slower to open a Web page the first time than it was when I opened the same page the next time? Then I know that caching is a small but fast storage device that exists in the CPU. To avoid accessing RAM and slowing down the program, some data and instructions that the CPU accesses several times in a short period of time are stored directly in the cache, thereby increasing the speed of access.

Just want to say read the book, their world view has become bigger, thanks to the teacher's recommendation.

The Book of the World is digital