Solution 20369: Using an AC Adapter to charge a Texas Instruments Graphing Calculator.
... as “1A” or “1000 mA”). To determine whether your charger is UL-certified, flip it over to the inside, and read the label. Look for the UL stamp, and confirm that it states that it is 1000 mA or higher. The I/O port that is located at the bottom of a TI Graphing calculator can be used to connect ...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/product-usage/20369
Solution 13660: Using Greek Symbols In Programming Scripts on the TI-83 Plus and TI-84 Plus Family of Graphing Calculators.
...ariables. There is not a way to add the Greek symbols to the list. Greek symbols will have to be replaced with a letter (A-Z) so the calculator can recognize it as a program variable.Greek symbols are used in some system variables. For example, lowercase sigma is used as part of the system variab...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/product-usage/13660
Solution 18890: Refunds for Texas Instruments Products.
...as Instruments cannot issue a refund for products not purchased directly through Texas Instruments. If a product is not functioning properly, please contact TI to troubleshoot. Please see the Warranty Information on Texas Instruments Products Purchased in the United States Knowledge Base case fo...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/general-information/18890