Typical examples of devices containing firmware are embedded systems such as traffic lights, consumer appliances, and digital watches , computers, computer peripherals, mobile phones, and digital cameras. The firmware contained in these devices provides the control program for the device. Firmware is a generic name for all the software that is embedded on non-volatile memory.
Python Javascript Linux Cheat sheet Contact. For example, if it is a continuous short beep, it can be a fault in RAM. If there are three beeps, it indicates that there is a fault in the keyboard. It is possible to perform further troubleshooting according to the beep code.
There are BIOS settings such as boot sequence, date and time and hardware settings. These configuration settings are stored on the motherboard in a special chip called CMOS. It is volatile and requires a constant flow of power to maintain the settings. Figure 2: Computer Motherboard. It is a small button cell battery that can be seen on the surface of the motherboard.
It can hold a charge for up to ten years before needing to be replaced. If you turn on your computer and your settings were reset or forgotten, your CMOS battery may be dead. For example, your hard drive may no longer detected correctly, or your system clock may be reset to a date in the past, such as January 1st, Some motherboards, including most modern ATX motherboards , continue to provide power to the CMOS if the battery is replaced while the computer is actively powered.
If you want to replace your CMOS battery, make sure to consult your motherboard documentation for details and safety information. Visit your motherboard manufacturer's support website if you need to download a new copy of your manual. Tip If you turn on your computer and your settings were reset or forgotten, your CMOS battery may be dead.
Warning If you want to replace your CMOS battery, make sure to consult your motherboard documentation for details and safety information.
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