Switch off the computer, unplug the keyboard, re-connect it and restart the computer. This may fix the problem.
If it doesn't then try connecting a different keyboard and see if it works. if it does, connect the apparently faulty keyboard to another computer and see if it works with that one.
If it doesn't, then someone may have either spilled some liquid onto the keyboard, and this is interfering with the keys sending signals to the computer, or something is stuck in there, such as a paperclip.
Disconnect the keyboard.
Check for signs of liquid.
If you see any, try placing the keyboard somewhere warm - where the liquid can evaporate.
If you don't see any, try shaking the keyboard gently and listen out for anything moving. If you hear anything moving around, then - ensuring that it is not connected to anything - carefully unscrew the back of the keybaord and see if you can remove whatever is in there.
Replace the cover correctly and re-connect it to the computer.
If it still doesn't work then you probably need to buy a new keyboard - as it will probably be cheaper than paying someone to fix it.
Different keyboards have different numbers of keys. Some have 104 keys; others may have only 89. To find out how many keys are on your keyboard, count them.
what do you do when the keys on the keyboard are pressed and the computer displays repeated characters
Because there just are!!
Many percussion keyboards have metal keys. Some of them are glockenspiel, xylophone and vibraphones. Piano is not a percussion keyboard as it has a string mechanism as well.
There are many unique features of the Blackberry keyboard. Some of the unique features of the Blackberry keyboard would be the ergonomic design of the keys.
Because some people prefer using the keyboard instead of the mouse.
I think so because for some reason my keyboard was re-mapped and I suspect a virus.
The reason the keyboard is the way it is, is purely because that was the first way a typewriter was made. The problem was that commonly used keys would clash together. So to stop that happening, Sholes (the guy who made the typewriter) separated common keys to stop this. Now, we whinge about it, but everyone's used to it.
Most pianos have eighty-eight keys. Some have up to ninety-six, but the average is eighty-eight keys.
Unplug keyboard from system. Use a cotton bud and some rubbing alcohol to clean the area around the keys. Take a cloth with a little rubbing alcohol on, and brush over the keys.
Well since you asked this question you must of used the keys on your laptop/computer! So you must of had the sense to count them...Total Keys = 84, but it depends on what computer you have....
There is no set number of keys for a multimedia keyboard. In addition to the standard 104 keys of a modern keyboard designed for Windows, there are also keys or buttons used to control various functions, such as volume control, muting, playback control (pause, play, stop, and skip), and possibly some buttons to launch other applications, like a web browser.