The wireless keyboard is not backlit that comes with an iMac but you can buy a backlit keyboard.
Yes
Older iMacs use a USB keyboard which plugs into a USB socket on the back. Some newer iMacs use a Bluetooth wireless keyboard. These need to be turned on by the switch at the right hand end. A light indicates if the keyboard is working. If the light flashes it means that the keyboard has not yet connected to the computer. (See links below)
Alt is Option on the Mac keyboard.
There is none on the keyboard.
Yes you can connect your wireless and USB iMac keyboard to PC or other iMac's. If you want to know how there are some videos on YouTube to help you do this.
There is NO back-lit keyboard available for the Dell 15r-5537 laptop!
You go to the options with the wrench. then hit screen/ keyboard, and find backlight timeout and set it to your desired times.
Yo cannot. It does not have that feature. I owns one hp6735s
There are 78 keys.
I have fixed mine. I suddenly throwed it in the snow, and stand on it. I dried it. Now the keyboard is working how it really needs to.
Press the enter key.
The iMac is an all-in-one computer. The monitor and computer are all in one unit. The only other hardware you need is a mouse and keyboard.
On the iMac wireless keyboard it is the second key from the left, on the very top of the keyboard. You can also open System Preferences and then click Display. There on the Display tab you will see a brightness control slider.