TI-99/4

TI-99/4 series
Designer	Texas Instruments
Manufacturer	Texas Instruments
CPU	3 MHz TMS9900
Graphics	TI-99/4A: TMS9918A VDC
Memory	16 KB RAM 256 bytes scratchpad RAM
Media	ROM cartridge
Released	TI-99/4: 1979 TI-99/4A: June 1981
Added to Museum	TI-99/4A: February 3, 2020

The TI-99/4 series consisted of two computers by Texas Instruments.

They used the TMS9900 CPU, clocked at 3 MHz, and were the first 16-bit computers released for the home market.

TI-99/4

The TI-99/4 was released in late 1979.

TI-99/4A

The TI-99/4A was released in June 1981. It was backward compatible with TI-99/4 titles. However, due to the improved graphics capabilities of the TMS9918A, not all TI-99/4A titles could be used on the TI-99/4.

Development

In 1977, two teams at Texas Instruments were working on two separate projects, a computer, and a video game console. The two projects were merged into the TI-99/4 series.

TI-99 hardware owned by WEC Museum

Title	Manufacturer	Release	Added to museum	Notes
TI-99/4A	Texas Instruments	1981	February 3, 2020	WEC Museum owns the system, two joysticks, box, quick setup guide, Beginner's Basic guide, reference guide, reference card, and video modulator manual.

TI-99/4A games owned by WEC Museum

Title	Developer	Release	Added to museum	Notes
Beginning Grammar	Texas Instruments	1979	February 3, 2020	WEC Museum owns the cartridge and manual.
Blackjack & Poker	Texas Instruments	1980	February 3, 2020	WEC Museum owns the cartridge.
Early Reading	Scott, Foresman Electronic Publishing	1980	February 3, 2020	WEC Museum owns the cartridge.
Number Magic	Texas Instruments	1979	February 3, 2020	WEC Museum owns the cartridge.

TI-99/4A applications owned by WEC Museum

Title	Developer	Release	Added to museum	Notes
Home Financial Decisions	Texas Instruments	1979	February 3, 2020	WEC Museum owns the cartridge and manual.
Household Budget Management	Texas Instruments	1979	February 3, 2020	WEC Museum owns the cartridge and manual.