A hard copy is a printed version of information from a computer, contrasting with the information displayed on a screen.
A line printer is a high-speed printer used for computer output, capable of printing an entire line of text at once and achieving high speeds suitable for large-scale printing tasks.
Output refers to the amount produced, whether it's the results provided by a computer system or the tangible results of a production process.
A printer is a device that produces a hard copy (printed paper) of documents stored in electronic form, usually on physical print media such as paper. Printers are a common peripheral in computing, available in various types with differing technologies and capabilities.
A printout refers to the process of producing hard copy output from a computer, involving the selection and printing of information from computer files or displaying the current content on a computer screen.
