The system clock keeps track of the date and time in a computer. true or false
|
A computer losing time or having the date and time reset is a symptom of an issue relating to the computer hardware or software. There are multiple causes for date and time loss or resetting issues. The most common causes are detailed below. Review each possible reason for help with how to fix the problem. Show
Computer CMOS battery failing or bad Before replacing the battery, set the date and time to the correct values in CMOS setup and save and exit the setup. If the values are lost again, set the values again, but leave your computer on for 2-3 days without turning it off. In some cases, this helps enable the CMOS battery to retain its settings for longer. If this does not resolve your issue, replace your CMOS battery.
Note Older computers may not have a BIOS that is compatible with any year 2000 dates. If your computer was manufactured before 1995, we recommend you contact the manufacturer to determine if the motherboard's BIOS is Y2K compatible. Issue with APMAPM, or Advanced Power Management, can cause issues with the computer keeping time. Verify this is not the issue by entering CMOS setup and disabling APM or Power Management. If this does resolve your issue, consult with the motherboard manufacturer or computer manufacturer for a possible BIOS update.
Third-party utility or programThird-party programs or screen savers can cause the time to stop or decrease significantly. If you are running Windows, close and disable all screen savers, and End Task all TSRs to ensure your lost time is not being caused by these programs.
If this resolves your issue, reboot the computer and determine what TSR or screen saver was causing this issue by disabling one TSR at a time. You can also leave the screen saver disabled to eliminate that as causing the problem. Once the culprit is found, see if the program has any available updates to resolve your issue. Virus infectionSome computer viruses can infect a computer and cause the date and time in the operating system to be incorrect or reset to a wrong time zone. A virus can conflict with operating system files that manage the date and time or cause operating system files to become corrupted. We recommend you run a virus scan to see if your computer is infected. If any viruses are found, remove the viruses from your computer to eliminate the infection. Change the date, time, and time zone back to the correct settings, then restart the computer.
If the date and time are incorrect again after restarting the computer, there may be corrupt operating system files causing the issue. Determine when the problem started to occur, then restore the operating system to a previous date before the problem occurred the first time.
Corrupt operating system filesIt is possible for operating system files to become corrupted, causing the date and time to be incorrect. Corrupt files can occur due to a virus infection, as mentioned above, or for other reasons. The best option to fix corrupt operating system files is to restore the operating system to a previous date before the problem occurred the first time. The restore process replaces the corrupt files with good files and hopefully fix the date and time issue.
Windows 95, Windows 98, or Windows ME userWhen changing the year in Windows 9x or Windows ME, the time stops until the Apply button is pressed. Computers have a "real-time clock" -- a special hardware device (e.g., containing a quartz crystal) on the motherboard that maintains the time. It is always powered, even when you shut your computer off. Also, the motherboard has a small battery that is used to power the clock device even when you disconnect your computer from power. The battery doesn't last forever, but it will last at least a few weeks. This helps the computer keep track of the time even when your computer is shut off. The real-time clock doesn't need much power, so it's not wasting energy. If you take out the clock battery in addition to removing the main battery and disconnecting the power cable then the computer will lose track of time and will ask you to enter the time and date when you restart the computer. To learn more, see Real-time clock and CMOS battery and Why does my motherboard have a battery. Also, on many computers, when you connect your computer to an Internet connection, the OS will go find a time server on the network and query the time server for the current time. The OS can use this to very accurately set your computer's local clock. This uses the Network Time Protocol, also called NTP. Is it true that the motherboard also is called a system board?A motherboard (also called mainboard, main circuit board, mb, mboard, backplane board, base board, system board, logic board (only in Apple computers) or mobo) is the main printed circuit board (PCB) in general-purpose computers and other expandable systems.
What is the function of the system clock quizlet?system clock- to control the timing of all computer operations. clock speed- measured by the number of ticks per second.
Why does a computer have a clock quizlet?The system clock is an important part of the processor that keeps time for the computer. Much like the heart in a human body, the system clock helps coordinate the actions the computer takes. The faster the clock, the more the system can do in a period of time.
Is a dualWhile a dual-core system has twice the processing power of a machine with a single processor, this doesn't mean it will always perform twice as fast. This is because some operating systems and programs are not optimized for multiprocessing.
|
