Electronic bank account unit with inter account link - provided by infrared communication with units having keyboard display and built in processing.

摘要

An electronic bank account unit has the general form of a pocket calculator, with a keyboard and display. Solar cells (2) power the unit and an LCD display (5) provides read out. Internally the unit has a CPU system, with a RAM memory for storage of transactions, and input/output stages. Two such units may communicate with each other using an infrared signal bidirectional transmission. ADVANTAGE - Allows communication between two different account holder systems.