__Count__:**4**graphing calculators (**3**distinct models),**0**of which are prototypes__By series__:**3**x*TI-Z80*,**1**x*TI-eZ80*__Oldest calculator__: a**TI-83 Plus**manufactured in July 2003__Newest calculator__: a**TI-84 Plus CE**manufactured in June 2022__Achievements__:View achievements __Total earned__:**2**(among which**0**feat of strength achievements and**0**secret achievements)