Environmental Protection. Didymo (Didymosphenia geminata), also known as rock snot, is a non-native invasive microscopic algae (diatom) that can produce large amounts of stalk material to form thick brown mats on stream bottoms. Didymo threatens aquatic habitat, biodiversity and recreational opportunities.
peripheral device - (computer science) electronic equipment connected by cable to the CPU of a computer; disk drives and printers are important peripherals.
One classification of peripherals is input devices. Input devices are the parts that bring information into the computer, like the keyboard, mouse, microphone, and scanner. The input device translates human actions or physical objects (analog data) into an electronic (digital) form the computer can recognize.nother classification of a peripheral is an output device. Output devices translate information stored in the computer and present it in a way that humans can understand it. Typical output devices in a computer system are the monitor, speakers and the printer.