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HOW TO INPUT DATA INTO A MATRIX ON TI83 CALCULATOR

Steps Key Sequence Screens
1. Go to matrix editor 2nd then x -1 key (for MATRIX)
Note: The instruction above is for the TI83 Plus. For the TI83, the MATRIX key is next to the MATH key – you need only press the MATRIX key.
  twice (for EDIT)
  1 (for the Matrix [A])
2. Enter the number of rows and columns Enter the number of rows, then ENTER
  Enter the number of columns, then ENTER
3. Enter data type in number, then ENTER
Note: Press enter after each number in the data. The numbers are entered left to right from the first row down to the last row.
4. To enter data into another matrix Goto step 1  
5. To exit the editor 2nd then MODE (for QUIT)