<Transferred from the administrator>Actually, many hardware devices do not require installing any driver programs under DOS. As long as the hardware is set up or the BIOS is configured, they can be used, such as the keyboard, ordinary hard drives, and printers that support PCL (Printer Control Language), etc. Using a PCL-supported printer under DOS is very easy. Since the printer is connected to the parallel port (LPT), usually LPT1 or PRN is the printer port. For example, the command COPY C:\CONFIG.SYS LPT1 (of course, you can also directly use the PRINT C:\CONFIG.SYS command) can print the content of the C:\CONFIG.SYS file with the printer. Everyone, isn't it very convenient? Of course, to print better effects (such as various fonts, images, etc.) in some DOS applications, special printer driver programs are still needed. In the "Printer Settings" in these applications, select the appropriate printer.