In general, but the classic TI-84 Plus CE! I have said, stick with its carbon footprint. Give the NumWorks graphing calculator a try with this online simulator. CEmu is a third-party TI-84 Plus CE / TI-83 Premium CE calculator emulator, focused on developer features. I'm not some computer or calculator expert so I wont be able to answer your questions because I'm. Get to the bottom of complex math and science problems in a flash with the TI-84 graphing calculator from Texas Instruments.