Data entry - Date after 1900, steps:

1. Select cell.
2. Type date on the keyboard.
3. Date after 1900 is accepted as a date.
4. The end (Kraj).

Note:
Check type of data in the Format cell dialog box.

Data entry - Date before 1900, steps:

1. Select cell.
2. Type date on the keyboard.
3. Date before 1900 is accepted as a text.
4. The end (Kraj).

Warning about keyboard keys:
    Key TAB change active cell - move to the next cell.
    Key ENTER finish enter data into cell and change active cell.
     Arrow keys are used to change active cell.