it will just be there when you buy the computer
CNET offer free software such as desktop clocks and alarm clocks for your PC/Mac. The best, free clock software is (according to numerous of websites) "Free Desktop Clock". It offers a vizualised clock software with great configuration for free.
Go to Windows Desktop and open context menu (right click on desktop), select "Gadgets" from the list. New window will be opened with available gadgets on the system. Just take "Calendar" or "Clock" gadget and drag it anywhere on the desktop. After you done, close this gadgets selection window.
You can purchase an application with a world time clock for your desktop through many different sources. Apps are available through Windows and Apple sites and general software will also sell them.
To have a clock display at all times on your device, you can enable the "Always On Display" feature if your device supports it. This option is typically found in the settings under "Display" or "Lock Screen." Additionally, you can use widgets or third-party apps to create a persistent clock on your home screen. For desktop computers, you can add a clock widget to your desktop or taskbar.
Gadget
Itts called the task bar.
A desktop gadget is a tool, sometimes useful, like a clock or something that tells the local weather. Or another option is a sliding puzzle or something useless. -Dave! Yognaut.
It powers the BIOS memory, keeping your bios settings active, and it powers the clock.
A clock typically has a circular or rectangular shape with hands or digits to indicate time. It may have a dial or display screen, and buttons or knobs for setting the time. Clocks can come in various sizes and designs, from wall-mounted to desktop styles.
There are lots of clocks that can downloaded and added to your desktop. CNET has some, as do other websites. They also list download instructions.
Many websites offer free desktop clocks. There are many different variations including traditional clocks, digital clocks, and even some that feature the ability to use your own background photos. One of the most popular desktop clocks is made available by Cnet.