The Sinclair ZX printer gives a permanent record if anything the computer can print on the TV screen. In addition, graphics always 'join up' if done in several goes, so that long programs, long tables of results and elaborate patterns and graphs can be printed out without a break.
Supplied with a printer are these instructions and one reel of paper. You will also need either a ZX81, or a ZX80 with the replacement ROM: the standard version of the ZX80 cannot be used. Chapter 20 of the ZX81 instruction book gives the BASIC commands necessary to use the printer. You will also need a 1.2A power supply which will have been supplied either with your computer or your printer.
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