9 electrical, optical, weighing, measuring, signaling and control devices and instruments for franking machines, namely, readers, barcode readers, scanners, weighing scales, letter scales and envelope format detecting machines, exclusively for office use; data processing equipment, namely, data processors, computer memories, encoders for PC based franking machines, and computers; data input and output devices, namely, calculators, modems, smart cards, keyboards, printers and accounting machines; letter and package scales; electrically and electronically controlled machines for sending, receiving, identifying, processing, and saving of postage due; computer programs and computer software, namely, cost calculating programs, internet communications software, and franking machine programs performing rate table functions, reloading of postage credits, and printing operations; computer peripherals, namely printers; billing machines; postage control devices, namely, computer based postage meters, and readers for reading imprints; computer based postage devices, namely, postal security modules for PC based metering; magnetically encoded ID cards; smart cards carrying post related information; chip card based systems comprised of smart cards and master cards for updating postage metering tables and access authority; computer interface boards; magnetic card readers; copiers; fax machines; couplers; output equipment, namely, printers for use with PC based franking machines and monitors; coding devices, namely, encryption and decryption units; photocopiers; carrier optimizing systems comprised of personal computers and PC based franking machines; and software for determining the most cost effective and time effective carriers; and parts and accessories therefore