Computer operating system explanation, introduction to the better book to explain the operating syst

Let's talk about the two more mainstream systems now: XP and the words are generally more suitable for today's desktops, and most people feel that they are used to it, and they have a relatively long development history, and the functions are quite perfect. Win7 is generally used in today's notebooks, which is mainly reflected in the fast running speed, especially in the case of high computer configuration, and with new innovations.

Various versions. Each has its own advantages and disadvantages. There is a difference in the software that goes with it.

1. All the high hardware and low software are just overkill, and they can definitely be used!

But low hardware is not able to install a high system, do you help someone else build a computer, or just install the system?

If it's a system, then XP, if you buy hardware, then of course according to win7!!

I'm dizzy, the operating system is generally backward compatible, and I now use Win8 XP, and the programs under XP can basically run.

Win7 is not good in China!! Because win7 supports less software! It won't be popular in two years!

In fact, this problem doesn't matter.,You can use XP to learn first.,Wait for the textbook to be updated.,It's not too late to install win7.。

Hello friends, here is a detailed introduction, you can refer to it! Have a great day, thank you!

The most authoritative and popular book on operating systems written by the Dutch computer scientist Andrew, ---Modern Operating System", if you need a Chinese edition, we recommend its Chinese translation (Huazhang Publishing), which contains Windows, Nuix and Linux

The most famous ones in China are "Computer Operating Systems" by Tang Xiaodan, Liang Hongbing, Zhe Fengping, and Tang Ziying.

Foreign ones are "Modern Operating System", "Concept of Operating System", "In-depth Understanding of Computer Operating System" and so on.

I don't know what you need, if you just want to learn some basic operations of the operating system, it is recommended that you buy a bound book of a computer newspaper or other magazine, this bound book is very simple, but easy to understand, while reading and using, you can quickly master the ordinary operation of the computer, including the reinstallation of the system, partitioning, computer hardware identification, how to improve the performance of the computer and so on.

Producer-consumer issues.

Process synchronization is a very important and interesting issue in a multi-process environment, and the producer-consumer problem is one of the representative process synchronization problems. Below we have given the producer-consumer problem in various situations, and an in-depth analysis and thorough understanding of this example will be of great help to comprehensively solve the synchronization and mutual exclusion problems within the operating system.

1) One producer, one consumer, and a common buffer.

Define two synchronous semaphores:

empty - indicates whether the buffer is empty, and the initial value is 1.

full——indicates whether the buffer is full, and the initial value is 0.

Producer process.

while(true)

2) One producer, one consumer, common n annular buffers.

Define two synchronous semaphores:

empty - indicates whether the buffer is empty, and the initial value is n.

full——indicates whether the buffer is full, and the initial value is 0.

Let the buffer be numbered 1 n-1 and define two pointers, in and out, which are used by the producer process and the consumer process, respectively, to point to the next available buffer.

Producer process.

while(true)

3) A group of producers, a group of consumers, with n annular buffers in common.

In this case, not only do producers and consumers have to synchronize, but also buffers must be accessed mutually exclusively between producers and consumers.

Define four semaphores:

empty - indicates whether the buffer is empty, and the initial value is n.

full——indicates whether the buffer is full, and the initial value is 0.

mutex1 - the mutually exclusive semaphore between producers, with an initial value of 1.

mutex2 – the mutually exclusive semaphore between consumers, with an initial value of 1.

Let the buffer be numbered 1 n-1 and define two pointers, in and out, which are used by the producer process and the consumer process, respectively, to point to the next available buffer.

Producer process.

while(true)

It should be noted that the order of the two P operations cannot be reversed, whether in the producer process or in the consumer process. You should perform the p operation of the synchronous semaphore first, and then the p operation of the mutually exclusive semaphore, otherwise the process may be deadlocked.