Texas Instruments TI-99/4A with some Extra Accessories
Autopsy:
from Wikipedia:
The Texas Instruments TI-99/4A was an early home computer, released in June 1981, originally at a price of USD $525.
It was an enhanced version of the less-successful—and quite rare—TI-99/4 model, which was released in late 1979 at a price of $1,150. The TI-99/4A added an additional graphics mode, “lowercase” characters comprised of small capitals, and a full travel keyboard. Its predecessor, the TI-99/4, featured a calculator-style chiclet keyboard and lacked any provision for lowercase text.
The TI-99/4A’s CPU, motherboard, and cartridge (“Solid State Software”) slot were built into a single console, along with the keyboard. The power supply board (linear in early systems, switching in later systems) was housed below and in front of the cartridge slot under the sloped area to the right of the keyboard.
What’s written on the keyboard PCB? Is it possible to have a photo of the bottom of the keyboard PCB added to the page, please? This would finally prove who made these switches.