Let’s rollback the hobby electronics calendar a few decades with [myvideoisonutube’s] alarm activation control circuit using a matrix style phone keypad. The circuit is quite old using CMOS 4081 with ...

Despite offering some useful features like magnetic alignment and a 12-digit numeric display, the iCalc Bluetooth Calculator Keypad's steep price tag is difficult to justify when full-size keyboards ...

Crunching numbers on excel or other data processing tools is easy, as long as you have a comfortable numeric keypad by your side. Why? Well, for starters, ergonomic numeric keypads have a unique tilt ...

As keyboards continue to grow smaller and slimmer in size, the alpha numeric keypad is usually the first casualty. For engineers, accountants, and other professionals who spend their days crunching ...

Our team tests, rates, and reviews more than 1,500 products each year to help you make better buying decisions and get more from technology. Despite offering some useful features like magnetic ...