In this post you will understand how to choose a computer keyboard. When you buy a keyboard, think about the purpose of buying. If you are an occasional user, you may choose a fancy leaser projected virtual keyboard or a sleek membrane keyboard. But if you are a typist, programmer or just a regular user of the computer, you should buy a mechanical keyboard or an optical keyboard.
As the mechanical keyboards were developed with typing and programming in mind, they make it simpler and durable. It has spring-activated keys that feel definitely better than rubber keys (membrane keyboard). There are many verities of mechanical keyboards available. Some have non-tactile, non-audible, linear switches and other has tactile bumps that make noises while pressing a key. But generally, all mechanical switches need 45 to 50 Grams-force to press a key.
On the other side, the optical keyboard uses new technology to transmit the signal. When you press a key, a light beam instantly passes and the signal transmitted. As this has less moving parts, it is more durable than the mechanical keyboard. Also, it requires less force to press a key. So if you are a typist or a programmer you may go for an optical keyboard.
Some people prefer to use a scissor-switch and butterfly keyboard as this is sleek in design. Although these keys are quiet and require very little force to press, they have not built to use heavily. If you want to know more about a keyboard visit this article "types of keyboard".
So if you are a typist or a programmer or use the computer for a long time, you should buy either a mechanical keyboard or an optical keyboard. If possible use an ergonomic mechanical keyboard.