Computer Keyboards
Over the years I have owned a number of different computer keyboards. These have varied in quality, ease of use and reliabilty. Years ago when I started work I used an IBM computer. This had a keyboard with a nice solid feel and a firm clicking action. Several years on and these keyboards ,the IBM M series, are a collectors item with some people modifying them to work with modern computers.
Most of the keyboards available today are of two types.
First the membrane keyboard. This has a rubber or plastic membrane below the keys. As they are depressed the membrane forms a contact with the printed circuit board and you see the matching character appearing on the screen.
The second type of keyboard uses mechanical switches. These have a small mechanical switch under each key which closes when you press a key and the character appears on your monitor. These are often referred to as Cherry MX keyboards after the Cherry computer company which first made them popular. Continue reading “Computer Keyboards”