This new calculator seems to possess all the functions of a conventional calculator, but ... It is not supplied with the USB-jack cable to the update of the calculator and the connection with your computer. it seems to come back to the 80's where the package was still incomplete to systematically repurchase the missing items. This connection costs in effect in 30 if purchased separately (almost half of your new calculator) which a seller as texas instrument really wins in a misery in the sales process adapted! texas I. provide there next time without a screen to buy everything and hand calculator !!! possible.