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Chapter 1 — The TEC-1G Reborn

This chapter will introduce the TEC-1G as a learning computer, not only as a collection of ports.

Planned coverage:

  • the TEC-1 idea: a small computer for learning how computers work
  • the TEC-1G as a 2023 rebirth around the Z80
  • why a keypad, visible displays, memory entry, and monitor firmware matter pedagogically
  • MON-3 as the lived environment of the machine
  • Debug80 as the modern way to observe and debug the same target
  • the built-in devices this book starts with: keypad, LCD, seven-segment display, and speaker
  • the 8x8 RGB matrix as an add-on that becomes the main visual programming target later
  • other expansion topics: GLCD, matrix keyboard, RTC, serial, storage, and expansion memory

This chapter should give enough history to make the machine feel purposeful, then move quickly to what you can program.

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