Computer motherboard knowledge CPU automatic detection and hardware error detection

Computer now has become a daily necessities of life, then how much do you know about computers? The following small series for you to organize some common computer hardware knowledge, quickly to learn!

Computer hardware, including all the physical parts of a computer, to differentiate between the data it contains or executes and the software that provides instructions for the hardware to complete the task. Computer hardware mainly includes: chassis, motherboard, bus, power, hard disk, storage controller, interface card, portable storage device, built-in memory, input equipment, output equipment, CPU fan, buzzer and so on.

Motherboard

　　1, the hardware error detection

Due to hardware installation errors, incompatible or hardware damage, and other reasons, it is easy to cause hardware errors, resulting in light operation is not normal, heavy system failure to work. In this case, you can only find the cause of the failure through the BIOS beep code at post self-test, hardware replacement, or through the DEBUG card. But these methods, the use is very inconvenient, and the user's professional knowledge also requires higher, to ordinary users does not apply.

For example, many motherboards are now specially designed for the hardware power self-test failure of the language broadcast function. For example, Asus's "POST broadcaster", this feature is mainly from the W83791SD chip of the Hua Bang Electronics, with ASUS design chip combination. can monitor CPU voltage, CPU fan speed, CPU temperature, chassis fan speed, power supply fan failure, case intrusion warning, and so on. In this way, it is better to maintain the best working state of the computer. When a system has a device failure, the POST announcer will use voice to remind the accessory to fail.

In the hardware debugging alarm, some motherboard manufacturers have their own very unique design. For example, MSI Motherboard, with four LEDs to reflect the failure of the motherboard. While some motherboards simply introduced the debug debugging of the earlier years debugging technology, using a more direct digital withdrawal point fault.

In addition, many manufacturers also designed for the motherboard AGP protection circuit, in addition to the video card protection, the protection circuit also uses an LED light-emitting diode, to tell the user whether the failure caused by the video card.

　　Automatic detection of 2.CPU

Previous old motherboard, require the user to set their own CPU FSB, frequency multiplier and voltage parameters (usually through the jumper to set). The motherboard now produced can automatically detect these parameters, and then correctly set these parameters, and stored in the CMOS. When the CMOS power off, you do not need to open the chassis to reset.

In addition, now the motherboard also has the old motherboard does not have the CPU temperature detection alarm function. The CPU temperature is too high, can cause the system to work is unstable or freezes, even destroys the CPU and so on. Therefore, the temperature detection of the CPU is very important. It emits warning detection when the CPU temperature is out of range. Temperature probes are available in two ways: one is integrated in the processor, relies on BIOS support, and the other is external, which can be seen on the motherboard, usually a thermistor. They change their resistance values by changing the temperature, allowing the temperature detection circuit to detect changes in the resistance, thereby changing the temperature value.