Texas instruments ti99-4a. Our 1st home computer. I remember using a tape recorder for programs and the voice synthesizer that we thought was rad. : r/80s
Texas Instruments TI-990 Computer System - Computer - Computing History
Texas Instruments TI-99/4 computer
1980 Texas Instruments TI PC portable Computer Original Print Ad ~ PM550 VPU100 | eBay
Texas Instruments Home Computer Command Module MIND CHALLENGERS 1980 PHM 3025 | eBay
nosher.net - Texas Instruments advert: You can't get a home computer from Texas Instruments under 16K RAM