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Everything about TD/SMP

TD/SMP, short for Terminal Device/Session Management Protocol, was a terminal multiplexer system introduced by DEC on their VT330/340 terminals in 1987. The terminal-side software was referred to as SSU, for Session Support Utility. TD/SMP allowed data from two separate host sessions to be sent to a compatible computer terminal over a single serial port. Earlier terminals had supported multiple sessions, but using separated physical connections to the host. Using TD/SMP also allowed you to free up any additional serial ports, for running a printer or similar tasks. The format was patented and never described in depth, limiting it to DEC's own terminal servers and terminals. More recently, the protocol has been reverse engineered by retrocomputing programmers. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: TD/SMPA 5-minute orientation
  2. Skim a recent paper: SMP-DL: a novel stock market prediction approach based on deep learning for effective trend forecastingInfluential work since 2022
  3. Pick up a classic book: Alice's Adventures in WonderlandThe most-reprinted book on the subject
  4. Read the landmark paper: A review of soluble microbial products (SMP) in wastewater treatment systemsCited 753 times
  5. Go sideways: Software flow controlA closely related topic
  6. Go sideways: VT320A closely related topic

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🏆 Landmark papers (most cited)

🆕 Influential since 2022

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