So far in Tech Tuesday we have taken a first look at how a computer does its work (processor), where it keeps data for quick access (memory), where data is kept longer term (storage) and how computers talk to each other (networking). Today’s topic is how to get data in and out of computers and to and from such things as printers, keyboards, screens, sensors, and more. These things are usually referred to as devices or peripherals. In the early days of computing many peripherals were relativel...