Computer comprises of three Essential Units in its design. These are:
Central Processing Unit
Input Unit
Output Unit
Peripherals are devices used for special purposes as an expansion to the computer.
Monitor displays the processed results without which it would have been difficult to contol Computer but anyhow it can be called a peripheral device because its perpose is to show off the processed data (output) on display.
monitor,keyboard,mouse
By device do you mean hardware or peripheral? If hardware: it's the CPU If you mean peripheral it depends. It can either be your printer or your monitor, depending how big you want your monitor to be.
An output device, such as a monitor (screen), or a printer.
monitor
A monitor is the viewing screen, a desktop consists of your cpu, computer components.
a peripheral device uses this to attach to a computer
A peripheral device is one that is used to put or get information from a computer. Five examples are, mouse, keyboard, monitor, printer and hard drive.
A peripheral is a device that is connected to a computer. The most common peripheral device is a printer.
Monitor
Peripheral means (of a device) able to be attached to and used with a computer, though not an integral part of it. So think about common peripherals, mouse, keyboard, monitor and speakers and so-on.
Peripheral Hardware is hardware such as Mice, Keyboards, monitors. Anything the computer doesn't require to run.
A keyboard is a peripheral device as it is connected to the computer system. It is used for type work up to the computer.