1. Apparatus for processing merchandise sale transactions for customers in a point of sale and warehouse facility, the apparatus comprising: a main processor including a database for storing customer identification information and merchandise information and including program instructions for processing a sale transaction record for each customer; a point of sale system coupled with said main processor, said point of sale system including a controller coupled to said main processor, and at least one portable computer coupled to said controller via radio frequency transmissions, and including program instructions responsive to entry of a customer identification number for accessing said database to display customer identification information and for generating said sale transaction record; said point of sale system including item entry means responsive to entry of a merchandise item identification number for accessing said database to display merchandise information pertaining to said item to the customer and for selecting said item for addition to said sale transaction record; said point of sale system including delivery method entry means for displaying merchandise delivery method information to the customer and for selecting delivery method instructions for addition to said sale transaction record; and said point of sale system including total command means for indicating acceptance of said sale transaction record by the customer and for transmitting said sale transaction record to said main processor to effectuate warehouse delivery of said selected merchandise items to the customer according to said selected delivery method instructions.