The correct answer is: D. All of the above
A graph plotter is a computer output device that produces hard copy graphs and charts. It is used to create graphical representations of data, such as line graphs, bar graphs,
and pie charts.A teletype terminal is a computer input/output device that allows users to interact with a computer by typing text and seeing the results of their commands on a paper printout. It is also known as a teleprinter or teletypewriter.
A line printer is a computer output device that prints text one line at a time. It is used to produce large amounts of printed output, such as reports, invoices, and mailing lists.
All of these devices can be used for both input and output. For example, a graph plotter can be used to create a graph of data that
is input from a computer, or it can be used to print a graph that is created by the user. A teletype terminal can be used to enter data into a computer, or it can be used to display the results of computer commands. A line printer can be used to print data that is output from a computer, or it can be used to create a hard copy of a document that is created by the user.