I have bought a new CITIZEN CT 666N Calculator.The special functional keys like 5/4,cost,sell,margin are available.But in manual how to use this function facility is not available. Anybody can guide me to use this facility?
I have bought a new CITIZEN CT 666N Calculator.The special functional keys like 5/4,cost,sell,margin are available.But in manual how to use this function facility is not available. Anybody can guide me to use this facility?