Texas Instruments

Welcome to my Texas Instruments collection.

This page is a repository for all of the Texas Instruments systems, peripherals, and accessories in my collection – it’s currently a work-in-progress, and I’ll continue to add things as and when I have the time.

Texas Instruments TI-99/4A

TypeHome computer
Release dateJune 1981
DiscontinuedMarch 1984
Operating systemTI BASIC v1.0
CPUTMS9900 @ 3 MHz
Memory16 KB (+256 B)

The TI-99/4A was released in June 1981, to address some of the issues with its predecessor, the TI-99/4. It added a full-travel keyboard, improved graphics, and a unique expansion system, which supported peripherals including a speech synthesizer. At half the price of the original model, sales picked up significantly, however TI’s insistence on limiting publishers continued to starve the platform of software.

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