| 摘要 |
A control and display apparatus and method for use with a heating and cooling system. Operating parameters of the system are arranged in a computer memory in a data structure comprising a plurality of virtual spreadsheets, the cells of which are individually displayed on an alphanumeric display panel. A keypad comprising at least four keys is provided to move the field of the display panel to a cell to be displayed and for adjusting system operating parameters within the cell.
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