Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Tektronix 405x series was a series of graphics microcomputers produced by Tektronix in the late 1970s through the early 1980s. The display technology was similar to the Tektronix 4014 terminal, using a storage tube display to avoid the need for video RAM. The 4051 and 4052 included a CPU, up to 32 kilobytes of RAM, keyboard, 11" CRT and full-sized 300 kilobyte 3M DC-300 series high speed data cartridge (as opposed to the cassette tape drive used by the HP 9830) to the right of the CRT in a single, desktop-sized housing. All models included a GPIB parallel bus interface for controlling lab and test equipment and external input and outout peripherals. A simple operating system and BASIC interpreter were included in ROM. A hard copy device was available which made copies of the screen.

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