IBM 602 Calculating Punch

The IBM 602 Calculating Punch, introduced in 1946, was an electromechanical calculator capable of addition, subtraction, multiplication, and division. It was programmed using a plugboard control panel and was IBM's first machine that did division. The 602 was available in four models: Model 1, Model 2, Model 50, and Model 51. The "Series 50" models were low cost versions that ran at a slower speed, with half as many program steps, and fewer storage registers and counters.