Taxpayers typically do not look at the Internal Revenue Service as a lifesaver. However, if you have lost your tax ID certificate -- also know as your Employer Identification Number (EIN) -- only the IRS can provide a verification letter confirming your number. Typically, businesses need government confirmation of their EIN when opening new accounts with banks and vendors.
Below we discuss the variety of peripheral devices used for computer input and output. Input Devices. Keyboard. The computer keyboard is used to enter text information into the computer, as when you type the contents of a report. The keyboard can also be used to type commands directing the computer to perform certain actions.
The computer mouse and scanner fall under the input device category. As the name suggests, input devices are used to send information to the computer. A mouse is used to input the movements of a cursor, while a scanner is used to input physical media into digital format. Output Devices. Printers and speakers are examples of computer output devices. Printers output digital information such as text or image files to a physical medium such as paper.