Brand	Texas Instruments
Type	Graphing
Release Date	1993
Display Type	LCD
Serial Num.	18023253
Date code	I-0694F
Country of origin	Taiwan

Purchased on kijij on July 14, 2022. According to the date code it was manufactured in june of 1994 by Inventec in Taiwan. This is the 1993 TI-81 revision. Currently in working condition but vertical lines are beginning to show up on the screen.