operating system questions and answers

The answer is not good. Why, because they do not know the principle. In fact, the principle is very simple. You can judge this only when macro definitions are added to the compiler parameters or makefile. For example, if the compiler sets macro is_windows, you can use it. It cannot be used without setting. However, I am sure that various compilers have built-in macros, such as cl.exe of MS vc, GNU gcc of Linux, which have different built-in macros on various platforms. Therefore, if I s

yourself-Reading Notes-first recognized protection mode The system explains some concepts of the protection mode, paving the way for the next article A comprehensive analysis of pmtest1.asm in "writing an operating system by yourself" I believe that the first jump from the real mode to the protection mode in this book will surely make everyone very exci

Do you know about Linux? Maybe you are a user of the Linux operating system, but do you know how the Linux operating system is managed on the mainframe? This article describes the complexity of Linux management on the mainframe. What is mainframe performance management? In the past, there was no difficulty in answering

to remember the motherboard BIOS in the settings to save the changes in the preset time to boot. Some motherboards can also be set to automatically boot from the BIOS at the same time on a daily basis by changing the "RTC Alarm Date" to "Every Day". However, to remind everyone, if the use of the BIOS automatically boot, the user's Windows operating system can only use one account, otherwise it is not poss

processor has been occupied by it. Process No. 0 is always a system state, if the No. 0 process after the end of the time slice, calculate the priority number and set the tag, so that the previous user process to continue to execute, whether it is a "system-state to user-state conversion." If it is, then there is the timing of scheduling, the timing of this arrangement is effective. Although there is this

= gravity + linear acceleration 11 Rotating Vector Sensor The rotational vector sensor is referred to as rv-sensor. The rotation vector represents the direction of the device and is a mixture of axes and angles to calculate the data. Rv-sensor output Three data: X*sin (THETA/2)Y*sin (THETA/2)Z*sin (THETA/2) Sin (THETA/2) is the order of magnitude of the RV. The direction of the RV rotates the same direction as the axis. The three values of the RV, and the cos (THETA/2) Form a four-tuple

Access|select| Error |access|select Too long did not update this blog, not do not want to write, but usually contact with the ASP programming is almost an endorsement of the state, there is no creative coder work, there is no new ideas, there is no sentiment, can not write Ah. Make Shida brother to remove my links are embarrassed to answer. First of all, say sorry to Brother Shida. The point, these days after a small system to write, the process of w

1. Add 6 hard disks (100 GB each. This can be done either through hot or cold addition, or by adding hard disks, using san storage to draw Luns, or adding multiple paths. At the operating system layer, the following sdb can identify such a lun. The following sdb is a just-divided GB lun (hard disk or bare block device ). [Root @ pri ~] # Cddev [root @ pride 1. Add 6 hard disks (100 GB each. This can be done

registry hkey_current_usersoftwaremicrosoftdwm "Usemachinecheck" =dword:00000000 key value to 1 or delete! Note: Some video cards open DWM may cause the system speed down or can not enter the system and other adverse consequences! Q: How do I edit Vista's multi-system boot menu Bootmanager? A: MS in Vista introduced Bootmanager to replace the original Boot.in

Our lives are getting more and more convenient because of the rapid development of science and technology in philadia. Nowadays, computers are becoming more and more popular. We use computers. Do we know how computers work? An operating system is essential to a computer. However, the Linux operating system has develope

　　Editor's note:Windows XP is an operating system that supports multiple users. We have many questions about its logon and account. Recently, many friends in the Forum mentioned that some of them are preliminary problems, there are some common examples. In order to give readers of it168 a clear understanding of Windows XP account management, logon problems, and s

"Write the operating system yourself" read Sense http://blog.csdn.net/zgh1988/article/details/7059936 Comprehensive analysis of the first chapter of "self-writing Operating System" http://blog.csdn.net/zgh1988/article/details/7060032 Comprehensive Analysis of the "self-writing Oper