One of the biggest inconveniences that we all have when we use laptop keyboard is that we don’t have a dedicated numeric pad for entering numbers. Picture shown on the right is a battery-powered numeric pad that has LCD display and can be hooked up to your laptop using USB connection. The great part about this numpad is that you actually do calculation on this numpad to get the result then anytime you can send the result to your computer with a dedicate “send” button.