Limit cell to numeric values only

[av8tordude]

Is it possible to limit cells to numeric values only? If so, can someone offer their knowledge in providing a code that will prevent the user from entering any character that is not a number value...

Starting at row 9, prevent the user from entering any character that is NOT a number value in the following columns: E-S & U-AA

Thank you for your expertise

[Bob Phillips]

Use Data Validation with numeric Allow option.