computer operating system

osversioninfo os; os.dwosversioninfosize=sizeof(OSVERSIONINFO); GetVersionEx (OS); CString StrOS; if(Os.dwplatformid = =0) {StrOS="Win32"; } Else if(Os.dwplatformid = =1) { if(Os.dwminorversion = =0) StrOS ="Windows"; Else if(Os.dwminorversion = =Ten) StrOS ="Windows 98"; StrOS+=os.szcsdversion;} Else if(Os.dwplatformid = =2) { if(Os.dwmajorversion = =3) {StrOS="Windows NT 3.51"; } Else if(Os.dwmajorversion = =4) {StrOS="Windows NT 4.0"; } Else if(Os.dwmajorversion = =5) { if(Os.dwm

The five algorithms of computer operating system process scheduling are: 1. First come first service Algorithm 2. Short job priority algorithm 3. High response ratio precedence algorithm 4. Time slice Rotation Method 5. Multilevel Feedback Queue algorithm public class Jcdu { String name; int id; int enter_time; int ser_time; Jcdu () {} void SetName (String

1, after the boot screen screen missing operating system; 2, check the computer USB interface is inserted with mobile devices: U disk, mobile hard disk, check the optical drive whether there is a CD-ROM; 3, the U disk, CD-ROM after the restart of the computer. Can be forced to shut down, that is, hold the Star

interlinked, but the method of implementation is different. Common tips: Reboot the system to solve the problem Occasionally the Apple computer system will suddenly appear strange problems, such as the boot without any sound, the mouse to lose the response and so on. You can then apply the "most common" fix for Windows systems--Restart your

Computer components: CPU (operator, controller, register, cache), memory (memory), input device, output device.Instruction set: The set of instructions that operations are performed on. Divided into: General instruction set and privileged instruction set.The minimum memory storage unit is byte (bytes). 1byte=8bitsThe 32-bit CPU (2^32) can access up to 4Gbyte of memory capacity.{The//32bits CPU can have a maximum of 4gbits changes.2^32 (BITS) =2^10*2^1

locking , which is used primarily to guarantee mutual exclusion of critical sections, while conditional variables are used for long waits for threads until the resources they wait for become available. 3 semaphore mechanism 1) Private semaphore : Enables synchronization between threads within the same process.2) Common semaphores : Also known as System semaphores, to enable synchronization between threads in different processes or processes. How to i

First of all, the first step to modify the CMOS settings so that the machine into the CD drive boot, specify the following: Start your computer Hold the DEL key right now. Enter BIOS or boot entry (different machine, the manufacturer's setting is not necessarily the same, but the principle is the same) The following is an example of the BIOS: Select Advanced BIOS Features Setup Several options appear below: bootup Device HDD-0 (HDD refers to ha

Process:(1) The classic concept of a process is an instance of a program in execution.(2) Each program in the system is running in the context of the process.(3) Context: consists of the state required for the proper operation of the program, which includes: the code and data stored in the memory, its stack, the general purpose Register,program counters, environment variables, and open file descriptors, and so on.The key abstraction that the process p

, I changed it to 1314, so that the intruders could not intrude into your computer by 3389. 4. Go to CMD and run net share and net user. See what other shared and suspicious user names are available. The Administrator and guest are the default ones in the system and do not need to be deleted. How can I add more ×××? Ignore it. Delete it. (Net user ×××/del), disable useless sharing. (Net share C $/Del ,.

Dual-nic computer linux operating system multiple services reverse DNS resolution problem solution overview-Linux Enterprise Application-Linux server application information, the following is a detailed reading. Many Computers are installed with dual NICs. When connecting to the Intranet, many services may encounter connection timeout. The most likely reason is t

operationResource management functions: Process management, memory management, device management10. Events that cause process creationUser login, job scheduling, service delivery, application request11. Events that cause the process to block and wake upFailed to request shared resource to SystemWait for some sort of operation to completeNew data not yet arrivedWaiting for new tasks to arrive12, the synchronization mechanism should follow the rulesIdle let inBusy is waitingLimited waitThe right

1.ARM, MIPS, SPARC,CISC is a complex instruction set is the CISC, others are thin instruction set.The 2.IP data header takes the () byte order, in this byte order, from the low address to the high address 0x1234 representation is (C). big_endian,0x12 0x34 0 0 little_endian,0x34 0x12 0 0 big_endian,0 0 0x12 0x34 Little_endian, 0 0 0x34 0x12 Resolution: Big_endian: High in low address;Small-endian: status in Low address3. Host A and Host B has established a TCP connection, host A

previously mentioned exceptions such as the termination of an interrupt fault and other underlying exceptions, the operating system uses context to implement multiple tasks, that is, to keep the status of a process, switch to another process and then return) Linux has 30 different types of signals: sighup suspended * Sending signal: Kill-9 15213 sending signal 9 to process ID: 15213 Alarm (x) sends a sig

Method 1:1. In desktop mode, find the computer icon.2. Right-click the computer icon and select Properties ].3. In this case, you can open "view basic information about the computer" and click "system type", as shown in the following figure:Method 2:1. In desktop mode, press WIN + C on the keyboard

1, at the same time press the Win7 computer keyboard win+r shortcut key to open the computer's running window, in the Open running window, enter the regedit and click return; 2, in the Open Registry Editor window, click to expand the left side of the menu hkey_local_machinesystemcurrentcontrolsetcontrolnlslanguage; 3, then in the right window to find the "intalllanguage" option and double-click to open, after the value from 0409 to

The operating system does not recognize the sound card what's going on? The basic function of a sound card is to convert the original sound signals from microphones, tapes, and discs to sound devices such as headphones, speakers, amplifiers, recorders, or to make a musical instrument sound through a musical device Digital interface (MIDI). Now let's see why the sound card doesn't work. This type of probl

target module and their required function libraries have been connected into a complete assembly module; dynamic links during loading, that is, when the program is loaded, each target module and the function libraries they need are connected into a complete assembly module, that is, the link for loading and changing the link; Dynamic Link during the runtime, that is, after the main program is loaded, which module is required to link the module during running; Ii. Storage Device Allocation Meth