Keyboard 1.The device could be detected automatically by PC without the driver,and plug and play. 2.Build-in DC 1.5V battary,It could be used normally without changing the battery for a long time. 3.The device applies to account by normal operations,such as"+,-,*,/,%":memory oprations,such as"M+,M-,MR,MC";and tax calculations by tax-set,tax-reference,calculating before tax-in,and calculating after tax-in. 4.In the mode of calaulator(CAL),it would apply the normal calator's function.And if you connect it by USB cable to your PC,you may send the results showed on LCD to PC to input or edit the data. **press"SEND"to send the results from LCD to PC input method should be inffthe mode of"English/Mathematics". 5.Press"MODE"to choose the mode for operation. a.Connecting this device by USB cable to PC,it would show:PC-KEYPAD",it expresses now in the mode of KEYPAD. b.After pressing :MODE".the words"PC-KEYPAD"would disappear on LCD.expresses now in the mode of calulator(CAL).
