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Food preferences for a particular customer are retrieved from a personal storage device, wherein the personal storage device is proffered from the particular customer. The food preferences for the particular customer are compared with multiple previously stored food menu items. A food menu is select

Food preferences for a particular customer are retrieved from a personal storage device, wherein the personal storage device is proffered from the particular customer. The food preferences for the particular customer are compared with multiple previously stored food menu items. A food menu is selected wherein the food menu items that satisfy the food preferences for the particular customer are distinguished, such that an electronic food menu is specified for a particular customer.

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Food preferences for a particular customer are retrieved from a personal storage device, wherein the personal storage device is proffered from the particular customer. The food preferences for the particular customer are compared with multiple previously stored food menu items. A food menu is select

Food preferences for a particular customer are retrieved from a personal storage device, wherein the personal storage device is proffered from the particular customer. The food preferences for the particular customer are compared with multiple previously stored food menu items. A food menu is selected wherein the food menu items that satisfy the food preferences for the particular customer are distinguished, such that an electronic food menu is specified for a particular customer. t cause said gate driving circuit to generate different gate driving signals for two adjacent gate lines in the same field, the gate lines corresponding to the copied lines of said display unit are driven by the second clock pulse signals, which do not overlap with the original clock pulses, in the same horizontal period as the horizontal period in which the gate lines corresponding to the original lines are driven , and wherein the second clock pulse signals are superposed such that the second clock pulse signals are generated in the two kinds of adjacent fields shifted from each other by at least one horizontal period. 4. A display apparatus according to claim 2, wherein the output enable signals generated for the two kinds of adjacent fields overlap in at least one horizontal period. 5. A display apparatus according to claim 2, wherein in at least one set of horizontal periods: the output enable signals generated for one of the two kinds of adjacent fields are generated in three successive horizontal periods and the output enable signals generated for the other of the two kinds of adjacent fields are generated in at least one pair of successive horizontal periods in which one of the output enable signals generated in the pair of successive horizontal periods overlaps with one of the output enable signals generated in the three successive horizontal periods. 6. A display apparatus according to claim 2, wherein none of the output enable signals overlap any of the original clock pulses. 7. A display apparatus comprising a driving circuit having: a pulse generating circuit to generate, in addition to original clock pulse signals, second clock pulse signals for a copy purpose with a desired timing in a horizontal period in an