I work with a Mac computer and use a keyboard without numeric keypad. So I wanted an extra keypad for entering larger sets of numbers - to make itself better grip. Now I use the SMK Calculator and am very satisfied! I have not only a numeric keypad without any additional cables but at the same time a desktop computer with all necessary for me functions like memory and percentage calculation. The connection to the Mac was hassle. You have to switch keypad for PC and desktop computers as necessary with the "Mode" button then between the Anwednung. When used as a calculator you can after calculating the result of this press immediately by the "Send" button to insert in place of the open document to the PC. Simply have to press the button and before the result appears on the computer screen in the open document - ideal for my purposes. The unit has an attractive appearance and also looks not cheap. The keys have a good pressure point and I can work with it quickly.
